@article{ author = {MirahmadiBabaheydari, Reza and Mirabootalebi, Seyed Oveis and AkbariFakhrabadi, Gholam Hosei}, title = {Effect of Alloying Elements on Hardness and Electrical Conductivity of CU Nanocomposites Prepared by Mechanical Alloying}, abstract ={Cu-based alloys have a wide range of applications in the electronics industry, communications industry, welding industries, etc. Regarding the type and percentage of the second phase, changing in the alloying elements has a significant effect on the mechanical and electrical properties of copper composites. The aim of the present work is to synthesize, investigate, and compare the micro-structure, micro-hardness, and electrical properties of different Cu-based nanocomposites. For this purpose, Cu-Al, Cu-Al2O3, Cu-Cr, and Cu-Ti were fabricated via ball milling of copper with 1, 3, and 6 weight percentages. The vial speed was 350 rpm and the ball-to-powder weight ratio was kept at 15:1. The milling process was performed at different times in Argon. Next, the prepared composites were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), and dynamic light scattering (DLS). Based on XRD patterns, crystallite size, lattice strain, and lattice constant were calculated by Rietveld refinement using Maud software. The results show a decrease of crystallite size, and an increase of the internal strain and lattice constant by rising the alloying elements in all composites. Then, the produced powders compressed via the cold press and annealed at 650˚C. Finally; the micro-hardness and the electrical resistance of the manufactured tablets were measured. The results of these analyses show that micro-hardness is increased by enhancement of the reinforcement material, due to the rising of the work hardening. Cu-6wt%Ti with 312 Vickers and Cu-1wt%Al2O3 with 78 Vickers had the highest and lowest micro-hardness, respectively. Moreover, the results of the electrical resistance indicate a dramatic rise in the electrical resistance by increasing the amount of alloying material, which Cu-1wt%Al with 0.26 Ω had the highest electrical conductivity.}, Keywords = {Copper Alloys,Mechanical Alloying,Electrical Resistivity,Mechanical Properties}, volume = {18}, Number = {1}, pages = {1-11}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.1}, url = {http://ijmse.iust.ac.ir/article-1-1970-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1970-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Gholami, Hedayat and Koohestani, Hassan and Ahmadi, Mehdi}, title = {Synthesis and Characterization of CoFe2O4 and CuFe2O4 Composited with Hematite by Impregnation Method for Removing Organic Pollutants}, abstract ={In this research, using impregnation method, spinel cobalt and copper ferrites nanoparticles are synthesized on the surface of hematite. Synthesized powders were characterized and examined by FTIR, XRF, XRD, FESEM, BET and EDS analysis and the dye degradation were investigated by UV-vis and AAS methods. Specific surface area increased especially in the sample containing cobalt, which indicates the precise of synthesis and the creation of high surface nano particles at hematite surface. The size of particles was in the nano scale and a good uniformity observed in the structure. The results indicated a significant increase in the catalytic ability of hematite nano composite after synthesis. Their catalytic capability investigated by the Fenton reaction with complete removal of methylene blue from the solution via UV-vis irradiation. The samples stability discovered to be excellent by the AAS method.}, Keywords = {impregnation method,hematite/CuFe2O4,hematite/CoFe2O4,spinel ferrites,Fenton reaction.}, volume = {18}, Number = {1}, pages = {12-20}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.2}, url = {http://ijmse.iust.ac.ir/article-1-1727-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1727-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Dewang, Yogesh and Sharma, Vipi}, title = {Effect of Process Parameters on Thermo-mechanical Behavior of Direct Extrusion of Aluminum Alloy}, abstract ={Finite element analysis has been carried out to investigate the effect of various parameters on axisymmetric hot extrusion process using aluminum alloy. The objective of the present work is to investigate the effect of friction coefficient, die angle, die-profile radius and predefined temperature of workpiece through FEM simulation of extrusion process. Nodal temperature distribution, heat flux, peak temperature at nodes and peak flux induced are identified as the output variables to assess the thermo-mechanical deformation behavior of aluminum alloy. Mesh sensitivity analysis is performed for the evaluation of mesh convergence as well as depicts the accuracy of present FEM model. Higher will be the coefficient of friction between interacting surfaces of die-billet assembly, more will be the increment in nodal temperature in billet. Higher will be the coefficient of friction, higher will be the generation of heat flux within billet, as this is achieved for highest coefficient of friction. Peak nodal temperature diminishes with increase in die profile radius nearly by 17 %.Maximum heat flux diminishes non-linearly by 30% with increase in die profile radius. Maximum nodal temperature increases nearly linearly by 14% with increment in predefined temperature of billet. Maximum heat flux decreases non-linearly by 5 % with increment in the initial temperature of workpiece. Validation of present numerical model is established on the basis of deformation behavior in terms of evolution of nodal temperature distribution upon comparison with previous studies available in literature.}, Keywords = {extrusion,coefficient of friction,die-angle,temperature,flux,Finite element method (FEM)}, volume = {18}, Number = {1}, pages = {21-31}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.3}, url = {http://ijmse.iust.ac.ir/article-1-1645-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1645-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {MohammadzadehMianji, Mahnaz and Sarpoolaky, Hossein and ShafieiSararoudi, Mehrnoush}, title = {The Microstructure and Translucency Investigation of Cellulose Containing Low Temperature Fritted Soft-paste Porcelain}, abstract ={Translucent porcelain with appropriate workability has been considered beneficial for light and shadow to be used in the production of ceramic artworks. In addition, using low firing temperature encourages more artists to use this body. The soft-paste cellulose composite porcelain is composed of similar amount of high Borax/Calcia leadless frit and Kaolin with 3% Vee gum T as a plasticizer. In order to increase workability and green strength, five units of soft-paste porcelain (SP) slip was mixed by one unit bleached bagasse pulp of sugar cane slip in volume and then cellulose containing soft-paste porcelain (CSP) slip was made. The samples were formed by hand, dried and then fired at the optimum temperature of 1120  for 5 hours. Results showed that the SP sample became self-glazed after firing while cellulose increased porosity in CSP. Microstructure analysis showed a large amount of glass phase, which improved translucency of the bodies. Moreover, mullite needle-shaped crystals were derived from the flux-penetrated clay because of less viscous molten body matrix. XRD results clearly showed that the fritted soft-paste porcelain consists of quartz, mullite, anorthite and albite in the fired state. Spectrophotometry showed that adding cellulose to the porcelain body slightly increased translucency in the wavelength ranges 400 to 500 nm.}, Keywords = {soft porcelain, fritted porcelain, translucency, cellulose}, volume = {18}, Number = {1}, pages = {32-39}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.4}, url = {http://ijmse.iust.ac.ir/article-1-1230-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1230-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Shafaghat, Jafar and Allahverdi, Ali}, title = {Mortar Properties Improvement by Using Fine Portland Cement Clinker as Reactive Aggregate}, abstract ={Microscopic studies has shown that adjacent to the interface between cement paste and aggregate, there exists an area with high porosity and low binding compounds that is referred to as interfacial transition zone (ITZ). ITZ in concrete and mortar imposes a number of negative effects, including flexural and compressive strengths reduction and permeability enhancement. That’s why many research attempts have been devoted to limit ITZ and its negative effects. The present study investigates the possibility of utilizing fine Portland cement (PC) clinker as a reactive aggregate in mortar for the same purpose. For this, natural quartz sand in normal mortar (NM) was totally replaced with PC clinker of the same particle size distribution and the most important engineering properties of the new mortar referred to as Reactive Aggregate Mortar (RAM) were measured and compared with NM as control. The results of compressive strengths measurements represented 65% and 21% increases at curing ages of 7 and 90 days, respectively, for RAM compared to NM. Chloride penetration depth in RAM displayed reductions by about 33% and 26% after 14 and 28 days of exposure, respectively. The effect of PC clinker reactivity on the microstructure and size of ITZ was studied by using scanning electron microscopy.}, Keywords = {Portland cement clinker, Compressive strength, Chloride penetration depth,Interfacial transition zone,Mortar,Portland cement clinker,Compressive strength,Chloride penetration depth}, volume = {18}, Number = {1}, pages = {40-47}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.5}, url = {http://ijmse.iust.ac.ir/article-1-1202-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1202-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Tavakoli, Hamed and Aboutalebi, Mohammad Reza and Seyedein, Seyed Hosein and Ashrafizadeh, Seyed Nezameddi}, title = {Optimization of Solvent Extraction Parameters for Separation of Samarium and Lutetium from Acidic Media Using Response Surface Methodology (RSM)}, abstract ={Separation of samarium and lutetium was investigated through solvent extraction from their mixed aqueous species using commercial extractants of D2EHPA and PC88A. The Response Surface Method (RSM) was utilized to design the solvent extraction experiments. In which, a Central Composite Design (CCD) was applied to set the optimum conditions for highest separation factors between Sm and Lu. Design of Experiments (DOE) was conducted by making use of four operating variables, namely initial pH of the aqueous solutions (A: 0.2–2.6), extractant concentration (B: 0.01-0.09 molar), mole fraction of D2EHPA in the extractant mixture (C: 0 - 0.8) and a type of acidic solution (D: sulfuric and nitric acid) at three levels. The results indicated that the initial pH was the most paramount variable in solvent extraction of samarium and lutetium, while in the case of lutetium, the molar fraction of D2EHPA in the mixed extractants was non-influential. The statistical model predictions were confirmed by experiments for both samarium and lutetium extraction with high validity parameter of 97 and 98%, respectively. The optimum conditions for samarium and lutetium separation were identified as: A=0.8, B= 0.05, C= 0.2 and D= sulfuric acid. According to the findings of the model, the desirability value at the optimum conditions was evaluated as about 0.93, in which 71% of lutetium was extracted while the amount of extracted samarium was only less than 1%.}, Keywords = {Samarium,Lutetium,D2EHPA,PC88A,Separation,Response Surface Methodology}, volume = {18}, Number = {1}, pages = {48-60}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.6}, url = {http://ijmse.iust.ac.ir/article-1-1777-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1777-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {SoleimaniGilakjani, Reza and Razavi, Seyed Hossein and Seifollahi, Masoumeh}, title = {The Effect of Niobium Addition on the Microstructure and Tensile Properties of Iron-Nickel Base A286 Superalloy}, abstract ={Niobium addition is an appropriate approach for improvement of superalloy’s operation. The purpose of this study is twofold: (1) to investigate on the η and γ/ phase precipitations along with (2) to identify the high-temperature tensile properties in A286 and Nb-A286, as a modified type. The heat treatment of both alloys was carried out in a two-stage aging procedure at 760°C for 16 h and 820°C for 2 to 30 hours, following characterized by optical and Scanning electron (SEM-EDS) microscopies, differential thermal analysis (DTA) and high temperature tensile tests. The results showed that niobium addition was increased the volume fraction of γ/ phase, from 10.7% to 12%, decreased its size, from 94 to 71 nm, and rising the γ/-dissolution temperature from 987°C to 1007°C. Moreover, the γ/ to η phase transformation was sluggishly occurred in Nb-A286 due to more stable of γ/ precipitations. Furthermore, the Nb-A286 alloy demonstrates higher mechanical properties than A286 one, approximately 100MPa improvement, which it was contributed to the much large volume fraction and finer size of more stabilized γ/ phase.  }, Keywords = {,A286 superalloy,Niobium addition,η and γ/ phases,microstructure evaluation,hot-tensile properties}, volume = {18}, Number = {1}, pages = {61-70}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.7}, url = {http://ijmse.iust.ac.ir/article-1-1803-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1803-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Rousta, Zahra and Tohidlou, Esmaeil and Khosravi, Hame}, title = {Influence of Erbium Addition on the Microstructural Evolution and Tensile Properties of Al/Mg2Si in-situ Metal Matrix Composites}, abstract ={This study deals with the effects of erbium (Er) addition on the microstructural evolution and tensile properties of Al-Mg2Si in-situ metal matrix composites. The morphology of primary Mg2Si and eutectic phases were observed in details using optical microscope and scanning electron microscopy (SEM). The results showed that the increase of Er content has a slight effect on the size and morphology of primary Mg2Si phases, but the eutectic structure evolves from the coarse structure into the fine one. Also, with Er addition the eutectic mixtures of Al and Mg2Si with fibrous morphology has been developed instead of the flake like Al-Mg2Si eutectic microstructure. Meanwhile, Al3Er phase was observed in the samples containing Er. The ultimate tensile strength (UTS) of the composite changes under the various content of Er. The maximum strength was found at the 0.6 wt% Er with the fine eutectic microstructure. The study of SEM micrographs from the fracture surface of composites revealed that Er addition changes the fracture mode from brittle to ductile one with fine dimples. The mechanism of microstructural evolution was discussed in details.}, Keywords = {In-situ composites,Al-Mg2Si metal matrix composite,Microstructure,Tensile properties.}, volume = {18}, Number = {1}, pages = {71-79}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.8}, url = {http://ijmse.iust.ac.ir/article-1-1728-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1728-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Paryab, Amir Hosein and Abdollahi, Sorosh and Khalilifard, Rashid and MadaahHosseini, Hamid Rez}, title = {Porous Slow Release Silicate-Phosphate Glasses Synthesized By Polymer-Derived Ceramics Method Appropriate For Plants Nourishment}, abstract ={  As an alternative to conventional fertilizers, e.g. NPK (the Nitrogen-Phosphorous-Potassium containing chemical fertilizers) which release their nutrients in a short period of time, due to high solubility in irrigation water, glass fertilizers are ideal as they release macro- and micronutrients for crops and plant nourishment. Also, despite conventional ones, they have no ground-water pollution. In the present study, glass fertilizers were synthesized via Polymer-Derived Ceramics (PDC) method. Despite the melt-casting procedure, PDC needs lower temperatures in heat treatment. The precursors consist of poly-siloxane and active fillers. Thus, thanks to gaseous release during heat treatment of the present active fillers, i.e. Ca(OH)2, MgCO3, and Al(OH)3, a porous microstructure can be generated. In order to manipulate the pore size and specific surface area, fractions of active fillers were used as calcined. The experiments showed that upon increase of non-calcined active fillers, the specific surface area and the amount of porosity was increased due to more gaseous release during heat treatment. Thus, affected by microstructure, the release rate of macro and micro-elements was higher in the sample containing non-calcined active fillers, in comparison to other samples. Additionally, the porous samples were able to be loaded by extra nutrients containing Nitrogen, like KNO3.}, Keywords = {glass fertilizer,polymer-derive ceramics,slow release,active fillers}, volume = {18}, Number = {1}, pages = {80-90}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.9}, url = {http://ijmse.iust.ac.ir/article-1-1846-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1846-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {SureshKumar, Chimmachandiran and Dhanaraj, Kaliyan and Vimalathithan, Ramasamy Mariappan and Ilaiyaraja, Perumal and Suresh, Govindhasamy}, title = {Structural, Morphological and Anti-bacterial Analysis of Nanohydroxyapatite Derived from Biogenic (SHELL) and Chemical Source: Formation of Apatite}, abstract ={The Nano Hydroxyapatite (HAp), HAp/PEG and HAp/PVP powders derived from both Gastropod shell (natural source) and chemical precursor by the precipitation method were characterized through various characterization techniques such as FT-IR, XRD, SEM-EDX, TEM, Antibacterial activity and SBF analysis. Based on the structural, chemical, morphological and biological characteristics, HAp/PVP from natural and chemical precursors have been compared successfully. Calculated structural parameters, crystallinity index, C/P ratio, morphology, antibacterial activity and SBF analysis of the products show that HAp/PVP-S (derived from a natural source) exhibits good mechanical property, rod like morphology, good antibacterial activity and apatite formation ability at 14 days. EDX analysis also shows the presence of carbon and sodium in HAp/PVP-S. Comparative analysis reveals that characteristics of HAp/PVP-S such as high carbonate content, low crystallite size, poor crystalline nature, presence of trace metal, non-stoichiometric elemental composition and rod like crystals which are matched with the characteristics of biological apatite. Thus, the HAp/PVP-S has the ability to form bone apatite.}, Keywords = {Hydroxyapatite,Precipitation Method,Comparative Analysis,Antibacterial activity,SBF Analysis}, volume = {18}, Number = {1}, pages = {91-109}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.10}, url = {http://ijmse.iust.ac.ir/article-1-1954-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1954-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {RanjbarMotlagh, Sasan and Momeni, Hosein and Ehsani, Naser}, title = {Study on the Post-annealing Process of Nb-Hf Alloy Produced by Spark Plasma Sintering}, abstract ={In this study, the effect of annealing treatment on microstructure and mechanical properties of Nb-10Hf-1Ti wt.% produced by Spark Plasma Sintering (SPS) was investigated. Scanning electron microscope (SEM), optical microscopy, X-ray diffraction analysis, hardness, and uniaxial tension test were used. Annealing treatment was carried out in a vacuum of 10-3 Pa at 1150 °C for 1, 3, 5, and 7 hours and in an argon atmosphere at 1350 °C for 5 hours. Internal oxidation and subsequent hafnium oxide formation causes the hardening of the C103 alloy and drastically increases hardness and tensile strength. Although HfO2 particles formed in the grain boundary cause brittleness and cleavage fracture of samples. Volume fraction, particle size, and mean interparticle spacing of oxides significantly change by annealing and subsequently the mechanical properties are affected. The SPSed sample at 1500 ℃ is softened by annealing at 1150 ℃ for 5 hours and its hardness and yield strength are reduced from 303 Hv to 230 Hv and 538 MPa to 490 MPa respectively. While annealing at 1350 ℃for 5 hours increases hardness and yield strength increases to 343 Hv and 581 MPa. }, Keywords = {,Annealing treatment,Nb-Hf alloy,Spark plasma sintering,Internal oxidation}, volume = {18}, Number = {1}, pages = {110-117}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.11}, url = {http://ijmse.iust.ac.ir/article-1-2022-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2022-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Macedo, Jonas Fernando and Fioravante, Igor Alexandre and Nakazato, Roberto Zenhei and Acciari, Heloisa Andréa and Codaro, Eduardo Norberto}, title = {Corrosion Behavior of API 5L X70 Carbon Steels in Hydrogen Sulfide Environments}, abstract ={As we all know, corrosion of pipelines by hydrogen sulfide is the most worrying factor in the production and transport of oil and gas. In this work the corrosion behavior of API 5L X70MS and X70MO low carbon steels in hydrogen sulfide environments was investigated. Hydrogen induced cracking and sulfide stress cracking tests were carried out according to NACE TM0177 standard. After testing, blisters and cracks were observed only in X70MO steel, probably due to its lower grain refinement and banded microstructure. Internal cracks seem to be initiated in elongated MnS inclusions. Corrosion process was studied by obtaining potentiodynamic polarization curves, which were registered after open circuit potential measurements, at room temperature. Both steels showed general corrosion in NACE 177A solutions, but the corrosion rate values ​​in H2S-saturated solution were about an order of magnitude higher than those ones in deaerated solution. Hydrogen permeation w::as char::acterized in accordance with ASTM G148 standard. In deaerated H2SO4 solution, permeation measurements were similar for both steels. In H2S-saturated solution, X70 MO exhibited higher hydrogen oxidation current values ​​than X70 MS. H2S seems to promote the reduction of protons and increase the concentration of hydrogen atoms in the solution/steel interface, favoring the diffusion process. As X70MO has a coarse microstructure, it offers more pathways for hydrogen diffusion.}, Keywords = {X70 steel,Hydrogen induced cracking,Sulfide stress cracking,Sour corrosion,Low carbon steel.}, volume = {18}, Number = {1}, pages = {118-127}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.18.1.12}, url = {http://ijmse.iust.ac.ir/article-1-1976-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1976-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Mirak, Alirez}, title = {Characterization of the Early Surface Films Dynamically Formed on Molten AZ91D and AM60B Alloys Under Different Atmospheres: A Comparative Study}, abstract ={In the present study, the early stages of the surface oxidation and fluoridation of liquid AZ91D and AM60B alloys under ultra-high purity (UHP) argon, dry air, and air mixed with two different protective fluorine-bearing gases were studied. The chemical composition, morphology and thickness of the surface films formed inside the trapped bubbles were characterized by SEM and EDS analyses. It is found that the molten AM60B alloy is more sensitive to impurities under UHP argon gas than AZ91D alloy. Under dry air atmosphere, the entire surface of molten AZ91D alloy is covered with an oxide layer and thinner thickness than the surface film formed on AM60B alloy which has a rough surface exhibiting granular growth in later stages of oxidation. The EDS analyses show that film chemistry is mainly composed of Mg, Al, and O elements. Under fluorine-bearing gas/air mixtures with either SF6 or HFC-R134a at 3.5%vol., a fresh surface film formed with a flat and dense morphology of a uniform thickness composed of mixed Mg, F, Al, and O elements. It is observed that there is a lower O:F intensity ratio in the surface film formed on the molten AZ91D alloy under 1,1,1,2-tetra-fluoroethane (HFC-R134a) mixed with dry air compared to the AM60B alloy under both air/ R134a and air/SF6 mixtures which shows a higher fluorine concentration in the surface film a leading to a better oxidation resistance .}, Keywords = {Molten AZ91D and AM60B alloys,fresh Surface film,Oxidation,Fluoridation}, volume = {18}, Number = {2}, pages = {1-13}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1570}, url = {http://ijmse.iust.ac.ir/article-1-1570-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1570-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Mohammadi, Masumeh and RezaeiAshtiani, Hamidrez}, title = {Influence of Heat Treatment on the AA6061 and AA6063 Aluminum Alloys Behavior at Elevated Deformation Temperature}, abstract ={The hot deformation behavior of the heat-treated AA6061 and AA 6063 aluminum alloys by T6-1, T6-2 artificial aging treatment, and O annealing treatment were studied by compression testing over a temperature range of 350–550  and strain rates of 0.005-0.1 s-1. It was observed that the flow stresses of the studied aluminum alloys treated by the T6-1 and T6-2 heat treatments were significantly higher than those of the O annealing treatment. Moreover, the stress-strain curves of the heat-treated alloys by the T6-1, T6-2, and O heat treatments demonstrated significant softening during deformation at the lowest strain rate under any of the deformation conditions. For several strains, the activation energy of hot deformation was specified and obtained to vary significantly with strain for the heat-treated alloys by the T6-1 and T6-2 treatments. The stress-strain data calculated from a linear equation, with strain-dependent parameters, shows a great fit with the experimental data for the heat-treated aluminum alloys.}, Keywords = {Hot deformation,AA6061,AA6063,Flow stress,Heat treatment,Aging,Annealing.}, volume = {18}, Number = {2}, pages = {1-17}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1890}, url = {http://ijmse.iust.ac.ir/article-1-1890-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1890-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Gouitaa, Najwa and Taj-dine, Lamcharfi and Lamfaddal, Bouayad and Farid, Abdi and Ounacer, Mohamed and Sajieddine, Mohamme}, title = {The Study of Structure and Transitional Phases in B0.95Bi0.05Ti1-xFexO3 Ceramics Synthesized by Solid State Route}, abstract ={    The structural and dielectric properties of iron and bismuth co-substituted BaTiO3 ceramic with the formula: B0.95Bi0.05Ti1-xFexO3 for x=0.00 to 1.00, synthesis with solid state route, were characterized.     The X-ray diffraction results show a tetragonal phase for x=0.00. While for x=0.40 to 0.80 we observed a coexistence of tree phase tetragonal, hexagonal and pseudo-cubic. And at x=1.00 only the pseudo-cubic phase is present and the other phase disappeared. The Raman results indicate the existence of tetragonal band for x≤0.40, and an appearance of characteristic bands of Fe3+ ions for more than 0.40 of Fe content. The SEM micrographs show an increase in grain size with the increase of Fe content and it reaches a maximum at x=0.40.  And the Mossbauer spectroscopy indicates that our samples is paramagnetic at room temperature and that the Fe is   oxidized under Fe3+ with no existence of Fe2+ and Fe4+ ions. The temperature dependence of dielectric permittivity was investigated in the frequency range from 20 Hz to 2MHz. The results show three dielectric relaxation phase transitions from a rhombohedral ferroelectric to orthorhombic ferroelectric (TR-O) then to a tetragonal ferroelectric phase (at TO-T), and finally to cubic paraelectric at the Curie temperature (TC).  In addition, the temperature of phase transition shifted to the lower temperature with the increase of Fe content for all the phase transitions. And the maximum of dielectric permittivity increases for TR-O while for TT-O and Tm phases transitions, it reaches a maximum at x=0.60 and x=0.80 respectively and then decreases.}, Keywords = {Structural,dielectric,BaTiO3,solid state,SEM,Mossbauer,paramagnetic,phase transition,curie temperature.}, volume = {18}, Number = {2}, pages = {1-9}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2058}, url = {http://ijmse.iust.ac.ir/article-1-2058-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2058-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Borhani, Gholam Hussein and Bakhshi, Saeed Reza and Soltani, Sadegh}, title = {The Effect of Temperature on the Purity of Nano-Scale Tantalum Powder Produced from Its Scrap by Reaction with Magnesium and Calcium}, abstract ={In this study, Ta powder was produced from Ta scarp via chemical processes using Mg and Ca powders. At first, Tantalum scraps were converted to Tantalum oxide (Ta2O5) at 1100˚C in an oxygen atmosphere. Tantalum oxide was reduced to Tantalum powder with Mg in a vacuum environment at 950 to 1200˚C for 3 hours. The obtained Ta powders further were reacted with Ca at 950˚C for 5 hours in a vacuum atmosphere. The powders were analyzed through X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), as well as oxygen measurement. The results show that the average particles size of the produced Ta powders is about 58 nm with oxygen contents of 250 ppm.}, Keywords = {tantalum,refractory metal,magnesium,recovery process,magnesiothermic reduction}, volume = {18}, Number = {2}, pages = {1-7}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2006}, url = {http://ijmse.iust.ac.ir/article-1-2006-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2006-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Alishavandi, Mahdi and Ebadi, Mahnam and Kokabi, Amir Hossei}, title = {Optimization of Parameters for the Friction Stir Processing and Welding of AA1050 Aluminum Alloy}, abstract ={Friction-Stir Processing (FSP) was applied on AA1050 Aluminum Alloy (AA) to find the highest mechanical properties among 28 combinations of the rotational and traverse speed (800-2000 rpm and 50-200 mm.min-1) and four different tool probe shapes (threaded, columnar, square and triangle). To this aim, the AA standard sheet went through a single pass of FSP. The 1600 rpm and 100 mm.min-1 with threaded tool probe was chosen as the best combination of rotational and traverse speed. Grain size at the Stirred Zone (SZ) was studied using Optical Microscopy (OM). The results showed that the SZ’s grain size was refined from 30 μm down to about 12 μm due to dynamic recrystallization during FSP. The processed sample exhibited improved hardness, yield stress, ultimate tensile strength, elongation up to 65, 80, 66, and 14%, respectively, compared to the annealed AA sample. Studying fractographic features by OM and field emission scanning electron microscope (FESEM) revealed a dominantly ductile fracture behavior.}, Keywords = {friction stir processing,AA1050 aluminum alloy,tool probe shape,grain structure,mechanical properties,rotational and traverse speed.}, volume = {18}, Number = {2}, pages = {1-11}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2016}, url = {http://ijmse.iust.ac.ir/article-1-2016-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2016-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Mostafapour, Amir and Mohammadi, Milad and Ebrahimpour, Ali}, title = {The Influence of Milling Parameters on Surface Properties in Milled AZ91C Magnesium Alloy}, abstract ={A full factorial design of experiment was applied running 36 experiments to investigate the effects of milling parameters including cutting speed with three levels of 62.83, 94.24 and 125.66 m/min, feed rate with three levels of 0.1, 0.2 and 0.3 mm/tooth, cutting depth with two levels of 0.5 and 1 mm and machining media with two levels, on surface integration properties of magnesium AZ91C alloy such as grain size, secondary phase percent, surface microhardness and surface roughness. In all cases, a fine grained surface with higher secondary phase sediment and microhardness obtained comparing the raw material. According to analysis of variance results, the most effective parameter on grain size, secondary phase percent and microhardness was cutting depth and the most effective parameter on surface roughness was feed rate. although the grain size in all machined samples was smaller than that of the raw material but due to the dual effect of cryogenic conditions, which both cool and lubricate and reduce the temperature and strain rate at the same time, the direct effect of this parameter on grain size was not significant. Also, the all interaction effects of parameters on grain size and microhardness were significant.}, Keywords = {Milling,Surface roughness,Grain size,DOE,ANOVA,Magnesium alloy AZ91}, volume = {18}, Number = {2}, pages = {1-13}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1971}, url = {http://ijmse.iust.ac.ir/article-1-1971-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1971-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Kuppahalli, Prabhakar and Keshavamurthy, Ramaiah and Sriram, Padmanathan and Narayana, Ahobal}, title = {Influence of Silicon Additions on Microstructure and Mechanical Properties of Manganese Bronze Alloys}, abstract ={The present investigation aims to synthesize RB031, RB032 manganese bronze alloys equivalent to HTB1 and HTB2 alloys  with additions of silicon  and to characterize them with the help of Microstructure and Mechanical properties. The methodology involves  melting of alloy’s in a 300kg Coreless medium frequency induction furnace, casting them in Permanent and Shell moulds with optimum values of Zinc equivalent and retaining their high mechanical properties. The study includes the development and mechanical property measurements of the alloys synthesized. Characterization has been carried out using Optical Microscopy and Scanning Electron Microscopy with EDAX analysis for investiagtion of compositional variations and inquisition of hardness measurement & tensile properties. It is concluded from this work that RB032 alloy cast in Permanent moulds has superior hardness and tensile properties compared to Shell moulds and far exceeds that of NAB (AB2) alloys processed under similar conditions. Further, this investigation includes grain refinement by suitable Heat treatment studies to combat Hot Tearing since the strength is adequate enough with RB032 exhibiting higher hardness than other two alloys.}, Keywords = {Zinc equivalent (ZE),Alpha + Beta Phase (α+ β),Hot tearing,Permanent Mould,Shell Mould,Si:Mn ratio,Manganese silicides}, volume = {18}, Number = {2}, pages = {1-11}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2063}, url = {http://ijmse.iust.ac.ir/article-1-2063-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2063-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Maghsoudlou, Mohammad Ali and BarbazIsfahani, Reza and Saber-Samandari, Saeed and Sadighi, Mojtab}, title = {The Response of GFRP Nanocomposites Reinforced with Functionalized SWCNT Under Low Velocity Impact: Experimental and LS-DYNA Simulation Investigations}, abstract ={The low velocity impact (LVI) response of pure and glass fiber reinforced polymer composites (GFRP) with 0.1, 0.3 and 0.5 wt% of functionalized single-walled carbon nanotubes (SWCNTs) was experimentally investigated. LS-DYNA simulation was used to model the impact test of pure and incorporated GFRP with 0.3 wt% of SWCNT in order to compare experimental and numerical results of LVI tests. All tests were performed in two different levels of energy. In 30J energy, the specimen containing 0.5 wt% SWCNT was completely destructed. The results showed that the incorporated GFRP with 0.3 wt% SWCNT has the highest energy absorption and the back-face damage area of this sample was smaller than other specimens. TEM images from specimens were also analyzed and showed the incorporation of well-dispersed 0.1 and 0.3 wt% of SWCNT, while in specimens containing 0.5 wt% of CNT, tubes tended to be agglomerated which caused a drop in LVI response of the specimen. The contact time of impactor in numerical and experimental results was approximately equal; however, the maximum contact forces in LS DYNA simulation results were higher than the experimental results which could be due to the fact that in the numerical modeling, properties are considered ideal, unlike in experimental conditions.}, Keywords = {,Energy absorption,Functionalized single-walled carbon nanotube,Low velocity impact,LS-DYNA simulation,Polymer composites}, volume = {18}, Number = {2}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1985}, url = {http://ijmse.iust.ac.ir/article-1-1985-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1985-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Karimi, Saeid and Heidarpour, Akbar and Ghasemi, Sam}, title = {Structural and Morphological Characterization of the Expanded Graphite Obtained by Ball Milling and HF Leaching}, abstract ={In this research, expanded graphite (EG) was successfully fabricated using a simple ball milling process followed by hydrofluoric (HF, 10 wt. %) leaching. The effects of ball milling time (0-15 h) and leaching time (1-24 h) on the exfoliation of graphite were examined by XRD and Raman spectra. Furthermore, the morphological evaluation of the obtained expanded graphite samples was carried out by scanning electron microscopy (SEM). The XRD results of the ball-milled and HF treated samples showed a slight peak shift and broadening of (002) plane for expanded graphite compared to the precursor and HF-treated samples. Moreover, the intensity of the (002) planes remarkably decreased by the ball milling process but remained constant after HF treatment. Raman spectra of the samples confirmed the ordering process only in HF-treated specimens. Moreover, the intensity ratio of 2D1 to 2D2 band gradually increased with enhancing the HF treatment time up to 5 hours, indicating a decrement in the number of graphite layers by leaching in the HF solution.}, Keywords = {Graphite,Ball milling,HF leaching,Expanded Graphite,Raman Spectroscopy.}, volume = {18}, Number = {2}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2131}, url = {http://ijmse.iust.ac.ir/article-1-2131-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2131-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {MohamadnejadZanjani, Sedigeh and Basti, Ali and Ansari, Rez}, title = {Multicrystalline Materials Analysis Based on Their Microstructure with Emphasis on Predicting Forming Limit Diagrams}, abstract ={Phenomenological methods are more diagnostic tools than a predictor, so multi-crystalline material approaches based on their microstructures have been proposed during the last years. The purpose of this research is to review methods taking into account the effect of microstructures and texture deformation on predicting the behavior of sheet metals. These methods can be categorized into six general groups: Taylor-type models, crystal plasticity finite element methods, strain gradient methods, methods that consider dislocations, self-consistent methods, methods based on fast Fourier transform. This paper attempts to explain and compare these methods that have been used to forecasting forming limits or stress-strain curves.}, Keywords = {Polycrystalline Materials,Forming Limit,Homogenization methods,Microstructures.}, volume = {18}, Number = {2}, pages = {1-26}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1753}, url = {http://ijmse.iust.ac.ir/article-1-1753-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1753-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Saxena, Namrata and Sharma, Varshali and Sharma, Ritu and Sharma, Kamlesh Kumar and Jain, Kapil Kumar}, title = {The Effect of Thermal Annealing on Structural, Morphological and Optical Features of BaTiO3 Thin Film assisted by e-beam PVD Technique}, abstract ={The work reported in this paper was focused on the investigation of surface morphological, microstructural, and optical features of polycrystalline BaTiO3 thin film deposited on p-type Si < 100 > substrate using e-beam PVD (physical vapor deposition) technique. The influence of annealing over the surface morphology of the thin film was analyzed by X-ray diffraction, atomic force microscopy and scanning electron microscopy characterization methods. When the annealing temperature was increased from as-deposited to 800 °C there was a significant growth in the grain size from 28.407 nm to 37.89 nm. This granular growth of BaTiO3 made the thin film appropriate for nanoelectronic device applications. The roughness of the annealed film got increased from 31.5 nm to 52.8 nm with the annealing temperature. The optical bandgap was computed using Kubelka-Munk (KM) method which got reduced from 3.93 eV to 3.87 eV for the as-deposited to the 800 °C annealed film. The above reported properties made the annealed film suitable for optoelectronic applications. For polycrystalline BaTiO3 thin film the refractive index varied from 2.2 to 1.98 from 400 to 500 nm and it was 2.05 at 550 nm wavelength. The broad peaks in Raman spectra indicated the polycrystalline nature of the thin film. It had been also observed that with the annealing temperature the intensity of the Raman bands got increased. From these results, it was proved that annealing significantly improved the crystallinity, microstructural, surface morphological and optical features of the barium titanate thin film which made it suitable as sensors in biomedical applications as it is cost-effective, lead-free and environment friendly material.}, Keywords = {Atomic Force Microscopy,Annealing,BaTiO3 Thin film,Kubelka-Munk,Optical Bandgap,Raman spectroscopy,Scanning Electron Microscopy,Tauc-plot,UV-Visible spectroscopy}, volume = {18}, Number = {2}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1879}, url = {http://ijmse.iust.ac.ir/article-1-1879-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1879-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Sharudin, Rahida Wati and MdAzmi, Nik Salwani and MatShayuti, Muhammad Shafiq and Ohshima, Masahiro}, title = {Rheological Comparison of Silicone Rubber Crosslinking with Platinum Catalysts and Triethylamine, Methanol & Ethanolamine Solvents}, abstract ={The control of silicone rubber’s viscoelastic properties namely loss factor, storage and loss moduli during crosslinking are crucial as its malleable behaviour changes differently under different conditions and affecting the final product. Hence, it becomes the objective of this study to investigate the rheological behaviour of silicone rubber cured under different formulation ratios with platinum catalysts and triethylamine, methanol & ethanolamine solvent. Measurement was conducted for the silicone rubber to crosslinker ratios of 2.5:7.5, 5:5, 7.5:2.5 and 10:1 at different elevated temperatures, and for the silicone rubber with triethylamine, methanol and ethanolamine at different angular frequencies. While the crossover of storage and modulus curve which signifies a gel point was not observed at higher ratios of platinum used across the temperature range of 25 – 100°C, it was found at 89°C and 95°C with the formulation ratios of 10:1 and 7.5:2.5, respectively. On the other hand, the crossover point was observed for silicone rubber at 100 s-1 for triethylamine, 3 s-1 and 100 s-1 for methanol, and 70 s-1 alongside 290 s-1 for ethanolamine. The presence of gel point indicates that crosslinking of silicone rubber successfully took place and this study proves that controlling the crosslinking behaviour was possible.}, Keywords = {silicone rubber,storage modulus,loss modulus,crosslink,glass transition temperature,rheological measurement}, volume = {18}, Number = {2}, pages = {1-9}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2067}, url = {http://ijmse.iust.ac.ir/article-1-2076-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2076-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Gouitaa, Najwa and Taj-dine, Lamcharfi and Farid, Abdi and FatimaZahra, Ahjyaje}, title = {Structural, Dielectric and Electrical Properties of Modified BaTi0.80Fe0.20O3 Ceramics by Zr Addition in Ti Site at x=0.00 to 0.10.}, abstract ={      In this study we have synthesis the Zr substituted BaTi0.80Fe0.20O3 ceramics at different content of Zr from x=0.00 to 0.10 by using the solid-state route. The room temperature X-ray diffraction results confirmed the coexistence of the two tetragonal and hexagonal phases for x ≤ 0.050 of Zr content. While above 0.050 the hexagonal phase disappears in benefit of tetragonal phase. The Raman results confirmed the formation of these phases obtained with XRD. The scanning electron micrographs consist of both spherical and straight grain forms for x=0.000 to 0.075, and only spherical grain form for x=0.100 attributed to the tetragonal phase. Also, the grain size increases accompanied with a decrease in density of ceramics with increasing Zr content up to 0.050 then decreases accompanied with an increase in density. Detailed studies of dielectric permittivity measurement have provided a presence of two anomalies Te and TR-O at different temperatures, with a relaxation phenomenon and diffuse behavior which is very important for ceramic at x=0.075 of Zr content. The dielectric permittivity values of the two anomalies of Zr substituted BaTi0.80Fe0.20O3 ceramics increase with increase of Zr content and the dielectric loss is minimal at x=0.100 of Zr content. The conductivity increases with the increasing of Zr substitution from 0.025 to 0.075 levels while for x = 0.100 the dielectric conductivity decreases.  And the Cole-Cole analysis indicates a negative thermal resistivity coefficient (NTCR) behavior of these materials and an ideal Debye-type behavior.}, Keywords = {Solid-state,X-ray diffraction,Raman,dielectric permittivity,anomalies,relaxation,diffuse,conductivity,Cole-Cole.}, volume = {18}, Number = {3}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2059}, url = {http://ijmse.iust.ac.ir/article-1-2059-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2059-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Abdulkhadar, Umarfarooq Maktedar and ShivakumarGouda, Patil Somalinganagouda and VeereshKumar, Gonal Basavaraja and Kodancha, Krishnaraja Govi}, title = {An Assessment on Residual Stress Measurement in FRP Composites Using Relaxation Techniques}, abstract ={Residual stress measurement is of utmost importance for the safety and reliability of engineering components and has been an active area of scientific research. Relaxation techniques such as hole drilling, slitting and ring core method are widely applied semi destructive techniques for residual stress measurements in polymer composites. This article reviews the recent literature on the measurement of residual stress in polymer composite by employing the above-mentioned relaxation techniques. This article summarizes the categories of residual stresses, causes of formation, techniques of measurements and also briefly outlines the chronological developments of the Hole drilling and slitting method. The article also provides a comparative summary of these relaxation methods.}, Keywords = {Residual stresses,Hole Drilling Method,Slitting Method,Ring core Method}, volume = {18}, Number = {3}, pages = {1-15}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2075}, url = {http://ijmse.iust.ac.ir/article-1-2075-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2075-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Bhuiyan, Mohammed Ruhul Amin and Mamur, Hayati}, title = {A Brief Review of the Synthesis of ZnO Nanoparticles for Biomedical Applications}, abstract ={Carbon-based chemical substances persistence can contribute to adverse health impacts on human lives. It is essential to overcome for treatment purposes. The semiconducting metal oxide is Zinc Oxide (ZnO), which has excellent biocompatibility, good chemical stability, selectivity, sensitivity, non-toxicity, and fast electron transfer characteristics. The ZnO nanoparticles are more efficient compared to other metal oxide materials. Thus, the nanoparticles are in the present research situation to receive increasing attention due to their potential performance of the human body to feel comfortable. The nanoparticles become more promising for biomedical applications through the development of anticancer agents to recovery different types of malignant cells in the human body. The ZnO nanoparticles can be the future potential materials for biomedical applications. The purpose of this paper is to review the cost-effective approach to synthesize the ZnO nanoparticles. Moreover, these ideas can develop for synthesized ZnO biomaterial to perform easily up-scaled in biomedical applications.}, Keywords = {Zinc oxide (ZnO),Nanoparticles,Biomedical applications,Cost-effective synthesis,Biomaterials.}, volume = {18}, Number = {3}, pages = {1-27}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.1995}, url = {http://ijmse.iust.ac.ir/article-1-1995-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-1995-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Tavakoli, Hamed and Aboutalebi, Mohammad Reza and Seyedein, Hossein and Ashrafizadeh, Seyed Nezameddi}, title = {Implication of Thermodynamic Functions and Speciation Diagrams in Analysis of Solvent Extraction Behavior of Samarium from Acidic Solutions}, abstract ={Solvent extraction of samarium from aqueous solutions by two different types of extractants, namely D2EHPA and PC88A, in kerosene was investigated. Through identification of speciation diagrams, the chemically stable complexes of samarium in different acidic solutions (H2SO4, HCl and HNO3) were first investigated. Regarding the various types of samarium species in sulfate medium in comparison with other acidic environments, H2SO4 and HNO3 media were chosen to examine the extraction behavior of samarium complexes. Thermodynamic parameters of samarium extraction reactions by D2EHPA and PC88A from aqueous solutions of HNO3 and H2SO4 were calculated as ∆G∘ (D2EHPA-HNO3),  , ∆G∘ (D2EHPA-H2SO4) , ∆G∘ (PC88A-HNO3), ∆G∘ (PC88A-H2SO4)  equal to -5.58, 3.40, 6.70 and 14.26, and respective ΔHº values equal to -9.38, -2.75, 4.01 and 16.95 kJ/mol, respectively. According to the results, D2EHPA seemed to be a more efficient extractant than PC88A and nitric aqueous solution was a better media than the sulfuric one. The synergistic effect of binary extractants revealed that synergistic factors were 2.94 and 5.74 in sulfuric and nitric solutions, respectively, for a D2EHPA:PC88A ratio of 2:3. The compositions of extracted complexes by D2EHPA and PC88A in sulfuric and nitric solutions were SmH3A6 and SmH3B6, respectively. Thermodynamic parameters of extraction reactions were calculated to be Ke equal to 9.513, 0.254, 0.067, and 0.003 and ∆S∘ (D2EHPA-HNO3),  , ∆S∘ (D2EHPA-H2SO4) , ∆S∘ (PC88A-HNO3), ∆S∘ (PC88A-H2SO4) equal to -12.75, -20.64, -9.03, and 9.03 (J mol-1), respectively.}, Keywords = {Samarium,Speciation diagram,Solvent Extraction,D2EHPA,PC88A}, volume = {18}, Number = {3}, pages = {1-10}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2105}, url = {http://ijmse.iust.ac.ir/article-1-2105-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2105-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Vengatakrishnan, Usha and Subramanian, Kalyanaraman and Rajapand, Vettumperumal and NattanmaiRaman, Dhineshbabu}, title = {Effect of Ultraviolet and Solar Radiation on Photocatalytic Dye (Black-E and Congo Red) Degradation Using Copper Oxide Nanostructure Particles}, abstract ={Copper oxide (CuO) nanostructure particles were prepared using KOH/NaOH catalyst by low cost precipitation method and characterized by powder X-ray diffraction (PXRD), scanning electron microscope (SEM) and energy dispersive X-ray spectra (EDX) analysis. The photocatalytic dye degradation study of pure CuO nanostructure particles are analysed against two azo dyes (Direct black 38 (Black-E) and Congo red) under ultraviolet (UV) and solar irradiation. The release of major active species (*OH) in the photocatalytic degradation by as prepared CuO nanostructure particles were investigated by photoluminescence (PL) spectra with two different excitation wavelength (325and 355nm). The band gap of CuO nanostructure particles was calculated from diffuse reflectance spectra. The photocatalytic effect of CuO nanostructure particles is confirmed from the UV – Vis and photoluminescence spectra and also, further confirmed from the kinetic studies under UV and solar radiations. The photocatalytic degradation results revealed that 16.35% and 7.5% of black E and Congo red dye was degraded under UV, while it was 47.2% and 17.6% under solar light. The influence of pH on the photodegradation and change in the reaction temperature under solar irradiation were also analysed}, Keywords = {copper oxide,photocatalytic activity,azo dyes,dyedegradation,precipitation method}, volume = {18}, Number = {3}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2145}, url = {http://ijmse.iust.ac.ir/article-1-2145-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2145-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Bobaaya, Rabah and Allaoui, Omar and Djendel, Mokhtar and Benaniba, Samir}, title = {A Surface Conversion Treatment on a Borided and Cemented Seel Coated with Chromium Filme}, abstract ={Coatings based on chromium borides and chromium carbides are commonly employed in applications requiring mechanical performance, such as high hardness and low friction coefficient, as well as corrosion resistance. In this work, we made layers of chromium borides and chromium carbides on the surface of low carbon steel through some specific treatments. For chromium borides, the boriding treatment in a solid medium at 900 °C for 4 hours followed by chromium electroplating on the steel surface and finally the application of annealing treatment at temperatures at 950 °C for 1 and 2 hours. For chromium carbides, the cementation in a solid medium followed by electroplating of chromium on the surface and finally the application of annealing treatment at temperatures between 500 and 1100 °C for 1 hour. The obtained results show that, in the first case, boron diffusion and chromium deposition lead to chromium borides on the treated surface. Similarly, for the second case, the cemented layer and the chromium deposited on the surface combine to form chromium carbides on the treated surface after annealing. The characteristics of the chromium borides and chromium carbides obtained are very similar to those of chromium borides and chromium carbides obtained by other processes.}, Keywords = {Chromium,deposition,steel,layer,diffusion,cementation,boriding,annealing}, volume = {18}, Number = {3}, pages = {1-8}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2150}, url = {http://ijmse.iust.ac.ir/article-1-2150-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2150-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Paryab, Amirhosein and Godary, Toktam and Abdollahi, Sorosh and Anousheh, Mohsen and MalekKhachatourian, Adrine}, title = {Manufacturing and Structural Evaluation of Polymer Derived SiOC/TiC and SiOC/TiC/mullite Nanocomposites}, abstract ={Silicon oxycarbide (SiOC) materials derived from silicone attracted great attention for their superior high-temperature behavior. In the present study, Si(Ti)OC and Si(Ti,Al)OC nanocomposites, in which alkoxide precursors were used with the main silicone precursor, have been compared with SiOC material. Although in SiOC, C was bonded with Si in a carbon-rich SiOC phase, X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) showed that TiC was the preferred state for C atoms upon adding Ti into the system. This claim was also substantiated by Raman spectroscopy, where adding Ti into the system lowered the intensity of the D band, indicating the high affinity of C to form crystalline TiC. In the Si(Ti,Al)OC nanocomposites synthesized by adding AlCl3 into the Si(Ti)OC system, mullite nanocrystals formed a superlattice structure with TiC. UV-vis spectra of the nanocomposites showed Si(Ti,Al)OC with mullite-TiC superlattice had a larger bandgap compared with Si(Ti)OC with only TiC nanocrystals.}, Keywords = {SiOC nanocomposite,mullite,TiC,polymer-derived ceramics}, volume = {18}, Number = {3}, pages = {1-8}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2093}, url = {http://ijmse.iust.ac.ir/article-1-2093-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2093-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {G.Shabestari, Saeed and Ashkvary, Sahar and Yavari, Farnaz}, title = {Assessment of the Microstructure and Solidification Characteristics of Al–20%Mg2Si Composite under Melt Superheating Treatment Using Thermal Analysis}, abstract ={The influence of melt superheating treatment on the solidification characteristics and microstructure of Al–20%Mg2Si in-situ composite has been investigated. The results revealed that melt superheating temperature has a significant effect on solidification parameters and morphology of primary Mg2Si particles. Solidification parameters acquired using cooling curve thermal analysis method, indicate that both nucleation temperature and nucleation undercooling of primary Mg2Si particles increase by increasing melt superheating temperature, while recalescence undercooling decrease under the same condition. Also, based on the microstructural evaluations, melt superheating treatment can refine primary Mg2Si particles and alter their morphology from dendritic shape to more spherical shape and the eutectic microstructure of a-Al + Mg2Si becomes finer and the distance between eutectic layers becomes smaller.  }, Keywords = {Al–20%Mg2Si in-situ composite,melt superheating treatment,cooling curve thermal analysis,microstructure,solidification}, volume = {18}, Number = {3}, pages = {1-9}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2056}, url = {http://ijmse.iust.ac.ir/article-1-2056-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2056-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Acay, Hilal and Yıldırım, Ayfer and Baran, Ayşe}, title = {Utilization of Edible Mushroom for Nanomaterial-based Bioactive Material Development}, abstract ={Gold nanoparticles (AuNP) were synthesized using edible mushroom Russula delica (RD) in this study. Possibilities to evaluate these synthesized nanoparticles (RD-AuNPs) as bioactive substances were investigated. Characterization of synthesized RD-AuNPswere characterized via UV-vis, XRD, FTIR, EDX. In spherical view, RD-AuNPs with a crystal size of 34.76 nm were synthesized. As a result, fungal systems used for nanomaterial biosynthesis as an effective alternative to chemical synthesis can be used in different biotechnological and medical applications. RD-AuNPs produced by green synthesis can be evaluated in this context.}, Keywords = {AuNPs,fungus,SEM,UV-Vis,XRD,Antimicrobial}, volume = {18}, Number = {3}, pages = {1-8}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2140}, url = {http://ijmse.iust.ac.ir/article-1-2140-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2140-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Lekmine, Farid and BenTemam, Hachemi and Temam, Elhachmi}, title = {Characterization of Nanocrystalline NiP Alloy Coatings Electrodeposited at Various Current Densities}, abstract ={Nickel phosphorus alloy coatings were prepared by electrodeposition route from sulfate electrolyte bath at various current densities. SEM studies reveal spherical grains covered the entire surface with uniform distribution. EDX results showed a linear increase of P content in the developed deposits with current density and therefore, enhancing the grains size and drop of the hardness values. XRD studies reveal monocrystalline orthorhombic alloys at a low amount of phosphorus (10.88 wt. %). Corrosion tests show that 1 A.dm-2 is the best applied current density giving the nobler Ecorr (-171.4 mV) and the lower icorr (4.64 µA/cm2).}, Keywords = {Ni–P alloy coatings,Crystal structure,P content,Hardness,Electrochemical properties.}, volume = {18}, Number = {3}, pages = {1-7}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2237}, url = {http://ijmse.iust.ac.ir/article-1-2237-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2237-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {HeidarAlaghband, Arian and Moosavi, Azam and Baghshahi, Saeid and Khorsandzak, Ali}, title = {Structural and Luminescence Properties of SnO2 Nanostructures Via Porcine Gelatin-Assisted Synthesis}, abstract ={Porous nanostructured SnO2 with a sheet-like morphology was synthesized through a simple green substrate-free gelatin-assisted calcination process using Tin tetracholoride pentahydrate as the SnO2 precursor and porcine gelatin as the template. Crystalline phase, morphology, microstructure, and optical characteristics of the as-prepared material were also investigated at different calcination temperatures using X-ray diffraction (XRD), Field emission scanning electron microscopy (FESEM), UV-visible absorption, and Photoluminescence spectroscopy (PL), respectively. XRD patterns of all the samples revealed the presence of a tetragonal crystalline structure with no other crystalline phases. Moreover, the synthesized hierarchical sheets assembled with nanoparticles displayed a large surface area and porous nanostructure. The calculated optical band gap energy varied from 2.62 to 2.87 eV depending on the calcination temperature. Finally, photoluminescence spectra indicated that the nanostructured SnO2 could exhibit an intensive UV-violet luminescence emission at 396 nm, with shoulders at 374, violet emission peaks at 405 and 414 nm, blue-green emission peak at 486 nm, green emission peak at 534 nm and orange emission peak at 628 nm.}, Keywords = {SnO2,Porcine gelatin,Sheet-like morphology,Optical properties,Photoluminescence.,Gel drying}, volume = {18}, Number = {3}, pages = {1-8}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2287}, url = {http://ijmse.iust.ac.ir/article-1-2287-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2287-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Ghannadi, Mitra and Hosseini, Hediye and MohammadSadeghi, Bagher and Mirzakhani, Bahman and Honaramooz, Mohammad Tahaah}, title = {Effects of Rapid Infrared Heating and Cryogenic Cooling on the Tensile Properties and Fracture Behavior of Al-Cu-Mg}, abstract ={The objective of the present paper is to investigate the effects of rapid heating and cryogenic cooling on on the microstructure and tensile properties of Al-Cu-Mg. The specimens were subjected to three heat treatment cycles in which the Infrared heating (IR) were used as the heating medium at the ageing stage, and the liquid nitrogen and water were used as the quenching mediums. The ageing temperature and time were 190⁰C and from 2 hours to 10 hours, respectively.The results indicated that by using IR at the ageing stage, the hardening rate enhanced because the rapid heating via this method leads to faster diffusion of the alloying elements. Moreover, the high density of nano-sized precipitates formed during ageingleads to higher strength and suitable ductility. Cryogenic treatment showed a negligible effect on both microstructure and tensile properties; however, it improved ductility. Overall, the combination of a high heating rate and cryogenic treatment led to the highest mechanical properties. SEM micrograph of the fracture surface of alloy demonstrated that in Cryogenic treatment+Artificial Ageing (CAA) condition, the surface had been fully covered by deep dimples in contrast to the Cryogenic treatment+Infrared Heating (CIR) and Water-Quench+ Infrared Heating (QIR) conditions which their dimples were shallow and also some facets were observed.}, Keywords = {Rapid heating,Cryogenic treatment,Precipitation hardening,Al- Cu-Mg,Tensile properties,Fractography.}, volume = {18}, Number = {3}, pages = {1-9}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2242}, url = {http://ijmse.iust.ac.ir/article-1-2242-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2242-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Thangaraju, Tamilanban and Ravikumar, Thirupandiyur Selvanambi and Kanthasamy, Sivaram}, title = {Microstructure and Mechanical Behaviour of Stir Casting Al/SiCp/Mg/Cu Composite with Varying Pouring Temperatures}, abstract ={The effect of pouring temperature while preparing Al SiC metal matrix composites, with additional benefits of magnesium and copper through stir casting technique were investigated. The composites were fabricated by mixing 12 wt% of SiC reinforcements, 4 wt% magnesium and 2 wt% copper into 6061 aluminium alloy melt at different pouring temperatures (630 ºC, 670 ºC and 710ºC). The addition of magnesium will enhance the wettability of the SiC particles with Al matrix and subsequently increase its interface bonding strength. The inclusion of copper has considerable improvement in strength and hardness of the composite. The microstructure and mechanical properties (tensile strength and hardness) of the Al MMC are evaluated with the corresponding processing parameter, specifically pouring temperature of the cast composite. The metallurgical characterization utilizing optical and scanning electron microscope were observed for the prepared composites. The coarse microstructure and homogenous distribution of alloying elements along with SiC particles were appeared within dendrite structures of the Al SiC composites. The SiC particles has effectively distributed and produced better bonding strength in composites prepared with 670ºC pouring temperature. Higher tensile strength and maximum hardness have occurred in composite at pouring temperature of 670ºC as compared to other composites. The mechanical properties were lower in composites prepared using lesser pouring temperature (630ºC) and significantly decreased for higher pouring temperature (710ºC) of the composites.  }, Keywords = {AlMMC,SiC,pouring temperature,microstructure,stir casting.}, volume = {18}, Number = {4}, pages = {1-11}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2121}, url = {http://ijmse.iust.ac.ir/article-1-2121-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2121-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Siddaramappa, Mala and Latha, Haraluru Kamala Eshwaraiah and Lalithamba, Haraluru Shankaraiah and Udayakumar, Andi}, title = {The Effect of Tin Concentration on Microstructural, Optical and Electrical Properties of ITO Nanoparticles Synthesized Using Green Method}, abstract ={Indium tin oxide (ITO) nanoparticles were synthesized by green combustion method using indium (In) and tin (Sn) as precursors, and Carica papaya seed extract as novel fuel. This paper highlights effect of tin concentration (5%, 10% and 50%) on microstructural, optical and electrical properties of ITO nanoparticles (NPs). The indium nitrate and tin nitrate solution along with the fuel were heated at 600 °C for 1 h in muffle furnace and obtained powder was calcinated at 650 °C for 3 h to produce ITO NPs. The above properties were investigated using XRD, FTIR, UV-Vis spectroscopy, SEM, TEM and computer controlled impedance analyser. The XRD, SEM and TEM investigations reveals the synthesized NPs were spherical in shape with an increase in average grain size (17.66 to 35 nm) as Sn concentration increases. FTIR investigations confirms the In-O bonding. The optical properties results revealed that the ITO NPs band gap decreased from 3.21 to 2.98 eV with increase in Sn concentration. The ac conductivity of ITO NPs was found to increase with increase in Sn concentration. These synthesised ITO NPs showed the excellent properties for emerging sensor and optical device application.}, Keywords = {Indium Tin Oxide,Green synthesis,Crystallite size,Band gap,Grain Boundary,AC conductivity}, volume = {18}, Number = {4}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2284}, url = {http://ijmse.iust.ac.ir/article-1-2284-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2284-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Abdulkhadar, Umarfarooq Maktedar and ShivakumarGouda, Patil Somalingana and Shirahatti, Anil and VeereshKumar, Gonal Basavaraja and Banapurmath, Nagaraj Ramalingyy}, title = {Effect of Ply Orientation on Residual Stresses and Their Influence on Mode I Fracture Toughness of Glass-Epoxy Composites with 0°//0° Crack Interface}, abstract ={The energy release rate for delamination in a laminated composite is supposed to be the material property being considered as independent of non-material property variables. However, Mode I fracture toughness(GI) is found to vary with lamina arrangement, geometrical dimensions, and process-induced stresses.  In this investigation, the influence of lamina stacking arrangement on process-induced stresses and their effects on GI of laminated composites are studied. Unidirectional (UD) ([0]16) and cross-ply ([902/06]s, [904/04]s and [906/02]s) Glass/ epoxy (GE) composites with the delamination plane at 0◦//0◦ were prepared by manual layup method and post-cured at 120 °C for 4 hours. GI of composite laminates were experimentally determined using a double cantilever beam(DCB) specimen as per ASTM D 5528. The slitting method was applied to determine the Process-induced stresses in GE laminates. The stacking sequence of laminas was found to have a noticeable effect on the state of residual stresses and GI of GE laminates. Residual stresses do not have much influence on the GI for delamination initiation, whereas GI  for the crack propagation was found to increase with a gradual increase in compressive residual stresses in GE laminates.}, Keywords = {,Residual stresses,Mode I interlaminar fracture toughness,slitting method}, volume = {18}, Number = {4}, pages = {1-10}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2368}, url = {http://ijmse.iust.ac.ir/article-1-2368-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2368-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Ahmadi, Sara and EftekhariYekta, Bijan and Sarpoolaky, Hossein and Aghaei, Alirez}, title = {Physical and Structural Characteristics of Gel-derived Glasses Prepared via Different Drying Procedures}, abstract ={In the present work, monolithic gels were prepared through different drying procedures including super critical, infrared wavelengths and traditional drying methods. Dense and transparent glasses were obtained after controlled heat treatment of the dried porous xerogels in air atmosphere. The chemical bonding as well as different properties of the prepared gels and the relevant glasses were examined by means of Fourier transform infrared spectroscopy (FTIR), Brunauer-Emmitt- Teller (BET) and UV-Vis spectrometer. Based on the obtained results, different drying conditions affect the average pore size and the total pore volume of the studied gels. The mean pore size was found to be 8.7 nm, 2.4 nm and 3.2 nm for super critical, IR radiation and slow drying in air atmosphere, respectively. The glass network structure was significantly changed by heat treatment  temperature so that the B-O-Si bonds were formed only after 450 °C. It was found that the gel dried under super critical condition was unable to reach to its full density all over the selected sintering temperature interval.  }, Keywords = {,Sol-gel glass,Super critical drying,IR drying,Sintering activation energy}, volume = {18}, Number = {4}, pages = {1-9}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2297}, url = {http://ijmse.iust.ac.ir/article-1-2297-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2297-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {SurryaPrakash, Dillibabu and DilipRaja, Naray}, title = {Investigation of Tribological Behavior on the Mechanical Properties of TiB2, Al2O3 Reinforced AA6061 Matrix Sintered Hybrid Composites}, abstract ={Hybrid composites consisting of AA6061 matrix reinforced with TiB2 (2, 4, 6, and 8 wt. %), Al2O3 (2 wt. %) particles were produced by the sintering process. In comparison to the base material AA6061, the composite produced had improved mechanical properties. The sintered composites' mechanical properties, such as tensile strength and hardness, are measured and compared to the wear-tested specimen. Optical micrographs reveal that composites were riddled with defects like blowholes, pinholes, and improper bonding between the particulates before sintering. However, the post-sintered optical micrograph showed that the defects were greatly suppressed. Micrographic images revealed the changes in surface characteristics before and after wear. Until a sliding distance of 260 m, the wear rate of the hybrid composites was kept lower than that of the base material. The coefficient of all the composite materials produced for this study was noted to be less than that of the base material. The results reveal that the hardness of hybrid composites having 4 wt. % and 6 wt. % of TiB2 particulates increased by 5.98 % and 1.35 %. Because of the frictional heating during the wear test, the tensile properties lowered by up to 49.6%. It is concluded that the hybrid composites having 4 wt. % and 6 wt. % of TiB2 particulates exhibited less wear rate for extended sliding distance, good hardness, moderate tensile strength, and decent elongation percentage compared to its counterparts.}, Keywords = {Hybrid composites,sintering,tensile strength,micro hardness,wear,coefficient of friction.}, volume = {18}, Number = {4}, pages = {1-13}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2230}, url = {http://ijmse.iust.ac.ir/article-1-2230-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2230-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Al-Reyahi, Anas and Degs, Salem Yahya and Issa, Ayman and Khattari, Zyad and AbuAlSayyed, Mohamme}, title = {Assessment of Structure, Dielectric and Gamma-Shielding Properties of Chemically Treated Natural Kaolinitic Clay}, abstract ={The structural properties of a natural clay sample (51% kaolinite) were tweaked to suit specific applications. H2SO4 and NaOH (1.0 M) treatment caused structural alterations and a significant release of Al ions compared to Si ions. Chemical treatment caused structural alterations, according to XRD analysis. FTIR analysis also indicated higher density of polar surface groups upon treatment which affected the corresponding dielectric behaviors. Dielectric measurements shown the suitable application of the materials either as dielectrical insulator and this dependent on the applied frequency. Acid treated kaolinite was reported to be a promising dielectric at 10 and 1000 Hz. With appropriate mass attenuation coefficients (μ/ρ) 12.098-12.182 cm2/g and a high half value layer of 10 cm at 10 keV, kaolinite and other treated forms were adequate shielding materials.}, Keywords = {Kaolinite,Acid/alkali treatment,Physicochemical characteristics,Dielectric and shielding properties}, volume = {18}, Number = {4}, pages = {1-14}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2114}, url = {http://ijmse.iust.ac.ir/article-1-2114-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2114-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Rahman, Muhammad Muzibur and Ahmed, Shaikh Reaz}, title = {Dry Sliding Friction and Wear of SnPb-Solder Affected Copper against Stainless Steel Counter Surface}, abstract ={This paper reports the wear behavior of Cu, high Cu-Sn alloy, high Cu-Pb alloy and high Cu-Sn-Pb alloy under dry sliding at ambient conditions. These four materials were chosen for the wear resistance characterization of SnPb-solder affected old/scraped copper (high Cu-Sn-Pb alloy) to explore its reusing potentials. Wear tests were conducted using a pin-on-disk tribometer with the applied load of 20N for the sliding distance up to 2772 m at the sliding speed of 0.513 ms-1. The applied load was also changed to observe its effect. The investigation reveals that the presence of a little amount of Sn increased the hardness and improved the wear resistance of Cu, while a similar amount of Pb in Cu reduced the hardness but improved the wear resistance. The general perception of ‘the harder the wear resistant’ was found to match partially with the results of Cu, Cu-Sn alloy and Cu-Sn-Pb alloy. Coefficient of friction (COF) values revealed non-linearly gradual increasing trends at the initial stage and after a certain sliding distance COF values of all four sample materials became almost steady. SnPb-solder affected Cu demonstrated its COF to be in between that of Cu-Pb alloy and Cu-Sn alloy with the maximum COF value of 0.533.}, Keywords = {Scraped Cu,SnPb-solder inclusion,Micro-hardness,Sliding wear,Coefficient of friction}, volume = {18}, Number = {4}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2334}, url = {http://ijmse.iust.ac.ir/article-1-2334-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2334-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Vengesa, Yemurai and Fattah-alhosseini, Arash and Elmkhah, Hassan and Imantalab, Omi}, title = {Effects of the Post-deposition Annealing Treatment on the Electrochemical Behavior of TiN Coating Deposited by CAE-PVD Method}, abstract ={The main purpose of this investigation is to assess the effect of post-deposition annealing treatment on the electrochemical behavior of TiN coating developed on AISI 304 stainless steel substrate using cathodic arc evaporation physical vapor deposition (CAE-PVD). Post-annealing treatment at 400 ºC was performed on the coated substrate for 1 h. The studied samples were characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), potentiodynamic polarization (PDP), and electrochemical impedance spectroscopy (EIS) tests. The preferred orientation of TiN (111) was identified by XRD patterns and the crystallinity of the coating increased after annealing treatment. SEM observations indicated that TiN coatings free of cracks were successfully developed on the substrate. The electrochemical measurements elucidated that the annealed coating had better corrosion resistance compared to that of the as-deposited coating with a lower current corrosion density. This investigation implied that improved corrosion performance of the TiN coating can achieved by performing post-deposition annealing treatment.}, Keywords = {post-deposition annealing,electrochemical behavior,TiN coating,CAE-PVD,EIS}, volume = {18}, Number = {4}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2384}, url = {http://ijmse.iust.ac.ir/article-1-2384-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2384-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Zerhouni, Jaouad and RhaziFilali, Fouzia and NaciriBennani, Mohammed and Qabaqous, Omar and Bouymajane, Aziz and Houssaini, Jamal and Allaoui, Safae and Benhallam, Faouzi}, title = {Study of the Effect of Acid-base Character of the Lamellar Double Hydroxides "Zn3Al-CO3" and of the "Ghassoul" Clay on Their Redox Potential and Antimicrobial Activities}, abstract ={Our study is to highlight the effect of the acid-base character and the redox potential of two clays, synthetic anionic Layered Double Hydroxides Zn3Al-CO3 (LDH) clay, and natural commercial cationic clay "Ghassoul" on their antioxidant and antibacterial activities. The antibacterial effect was tested on two Gram-positive bacteria: Staphylococcus aureus and Enterococcus faecalis. Then it was tested on a Gram-negative bacterium: Escherichia coli. The determination of the minimum inhibitory concentration of the two materials was carried out using the microplatemicrotitration technique. The antioxidant activities of clays are assessed by the methods 2.2-diphenyl-1-picrylhydrazyl and the reducing power of iron (Fe3+). The redox potential (Eh) was measured and the redox strength (rH2) was evaluated. The results showed that these materials have an antibacterial effect on the three bacteria tested, the measured zero charge point of Ghassoul (pHzpc =8.75) more basic than that of double layer hydroxide (pHzpc =7.5), redox potential of LDH (-27mV) was higher than that of Gh (- 103mV), and the rH2 of Gh (14.04) was higher compared to anionic clay (13.33). Keywords: LDHs, Ghassoul, Redox Potential, Zero point of Charge, Antibacterial.}, Keywords = {LDHs,Ghassoul,Redox Potential,Zero point of Charge,Antibacterial}, volume = {18}, Number = {4}, pages = {1-13}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2202}, url = {http://ijmse.iust.ac.ir/article-1-2202-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2202-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Jafaripour, Mohammad and Koohestani, Hassan and Ghasemi, Behrooz}, title = {Characterization of Aluminum Matrix Composites Reinforced with Al2O3, SiC and Graphene Fabricated by Spark Plasma Sintering}, abstract ={In this study, aluminum matrix composites reinforced with Al2O3 and SiC nanoparticles, and graphene nanoplatelets produced by Spark Plasma Sintering (SPS) were studied. The microstructural and mechanical properties of the composites were evaluated by changing the amounts of the reinforcing materials. The SEM images showed that the reinforcing particles were more distributed in the grain boundary regions. According to the results, the addition of alumina and SiC to the matrix caused an increase in the composite density whereas the composite density decreased by adding graphene nanoplatelets. The highest relative density of 96.3% was obtained for the composite containing 2 wt% Al2O3. The presence of the reinforcing particles increased the hardness of all the samples compared to the pure aluminum (39 HV). The composite containing 1 wt.% Al2O3, 0.7 wt.% SiC, and 0.3 wt.% graphene showed the highest hardness of 79 HV. Moreover, the plastic deformation of the specimens decreased and the slope of the plastic region increased by adding the reinforcing particles to the matrix.}, Keywords = {Al composite,Spark Plasma Sintering,graphene nanoplatelets,Al2O3 and SiC}, volume = {18}, Number = {4}, pages = {1-12}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2321}, url = {http://ijmse.iust.ac.ir/article-1-2321-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2321-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {Golbabaie, Farideh and FarhangDehghan, Somayeh and HabibiMohraz, Majid and AkhlaghiPirposhteh, Elham}, title = {Role of the Electrostatic Mechanism in the Filtration Process of Nanofibers}, abstract ={The present study aims to investigate the role of the electrostatic mechanism in the filtration process of Polyacrylonitrile nanofibers containing single-walled carbon nanotube. The nanofibers were fabricated via electrospinning using 16wt% Polyacrylonitrile polymer (PAN) solution, single-wall carbon nanotubes (SWNT) at a ratio of 99:1 along with N and N-Dimethylformamide solvents. Initial filtration efficiency was tested as per ISO 29463:2011 standard inside a test rig. An electrostatic discharge test was performed via the chemical treatment of the filter media with Isopropyl alcohol in accordance to EN779 standard. Mean initial filtration efficiency of the nanofiber media in the capturing of 100nm and 200nm particles were 95.92% ±2.74 and 97.26% ±1.11 respectively, while for particles between 80nm to 250nm, this was 96.73% ±2.74. The efficiency of the untreated media was 0.2% to 1.2% higher than the PAN/SWNT media after electron discharge using Isopropyl alcohol with an even bigger difference being observed at lower particle size ranges. After treatment with Isopropyl alcohol, the pressure drop of the filtration media was increased from 164.7 Pa to 185.3 Pa. The reduction in filtration efficiency observed after the electrostatic discharge test indicates that the electrical charge of the electrospun nanofibers is influential in its initial efficiency for removing the submicron particles.}, Keywords = {Nanofibers,Carbon Nanotubes,Filtration,Efficiency,Electrostatic}, volume = {18}, Number = {4}, pages = {1-14}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2291}, url = {http://ijmse.iust.ac.ir/article-1-2291-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2291-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} } @article{ author = {ZamaniMeymian, Mohammad Reza and Keshtmand, Razieh}, title = {Surface Modification of the SnO2 Layer Using UV-Ozone in a Perovskite Solar Cell with a Planar Structure}, abstract ={Tin oxide (SnO2) is used as an electron transport layer (ETL) in perovskite solar cells with a planar structure due to its good transparency and energy level alignment with the perovskite layer. The modification interface of the electron transport layer and the perovskite absorber layer plays an important role in the efficient charge extraction process at the interface. In this study, planar perovskite solar cells with configuration (FTO/SnO2/mixed-cation perovskite/CuInS2/Au) were prepared to investigate the effect of UV-Ozone (UVO) treated SnO2 as ETL on the performance of devices. ETL treatment was performed at different times (0 to 60 min). It is shown that surface wetting was improved by UVO treating the SnO2 films prior to deposition of the perovskite layer. The latter improves the contact between the ETL and the perovskite layer, allowing more efficient electron transport at the interface. Contact angle, SEM, photoluminescence spectra, and the current density-voltage tests were conducted to characterize the photovoltaic of the cells. The best PSC performance with a power conversion efficiency of 10.96% was achieved using UVO-treated SnO2 ETL for 30 min, whereas the power conversion efficiency of the perovskite solar cells with SnO2 ETL without UVO treatment was only 4.34%.}, Keywords = {SnO2,UV-Ozone,treatment,planar perovskite solar cell}, volume = {18}, Number = {4}, pages = {1-9}, publisher = { Iran University of Science & Technology}, title_fa = {}, abstract_fa ={}, keywords_fa = {}, doi = {10.22068/ijmse.2394}, url = {http://ijmse.iust.ac.ir/article-1-2394-en.html}, eprint = {http://ijmse.iust.ac.ir/article-1-2394-en.pdf}, journal = {Iranian Journal of Materials Science and Engineering}, issn = {1735-0808}, eissn = {2383-3882}, year = {2021} }