@article{ 
author = {S.A.Sajadi,  and R.Ebrahimi,  and M.M.Moshksar,},  
title = {An Analysis on the Forming Characteristics of commercial pure Aluminum AA 1100 in Radial-Forward Extrusion Process}, 
abstract ={Abstract: In this paper, the forming process of a central hub by radial-forward extrusion is analyzed by using the finite element software, ABAQUS. Radial-forward extrusion is used to produce hollow parts that generally feature a central hub with radial protrusions. Effective design factors such as mandrel diameter, die corner radius, die fillet radius, mandrel corner radius, tube wall thickness and frictional conditions on the force required are investigated by simulation process. Commercially pure Aluminum AA1100 is selected as a model material for both experimental investigation and simulation analysis. Comparison is made and good agreement between the experimental result and that of finite element method is achieved.},  
Keywords = {Radial-forward extrusion; Finite Element Method; Radial Protrusions},
volume = {6},
Number = {1}, 
pages = {1-6}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-152-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {S.H.R.FatemiNayeri,  and J.VahdatiKhaki,  and M.R.Aboutalebi,},  
title = {Implementation of Combined Mechanical Activation and Thermal Analysis for Identification of Combustion Synthesis Mechanism in TiO2-Al -C System}, 
abstract ={Abstract:A combination of mechanical activation and Differential Thermal Analysis (DTA) together with X-Ray Diffraction (XRD), and various microstractural characterization techniques were used to evaluate the starting reaction in the combustion synthesis of TiC-Al2O3 composite in TiO2-Al-C system. The mechanical activation was performed on the mixtures of two components of TiO2/Al, Al/C and TiO2/C and then the third component was added according to the stoichiometric reaction for 3TiC+2Al2O3 composite formation. The powder mixtures were heated up to 1450 °C under Argon atmosphere at a heating rate of 10 °C/min. The combustion synthesis temperature was observed to decrease from 962 °C to 649 °C after milling of TiO2/Al mixture for 16 hr. On the contrary, the mechanical activation of Al/C and TiO2/C mixtures for 16 hr made the reaction temperature increase to 995 °C and 1024 °C, respectively. The decrease in reaction temperature as a result of milling the TiO2/Al mixture could be due to an increase of TiO2 and Al interface area as confirmed by TEM micrographs and XRD patterns of milled powder mixture. In addition, DTA experiments showed that for the sample in which TiO2 and Al were mechanically activated the reaction occurred at the temperature even lower than that of Al melting point.},  
Keywords = {TiC+Al2O3; Mechanical activation; Combustion synthesis; Reaction Mechanism},
volume = {6},
Number = {1}, 
pages = {7-14}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-153-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.PirhadiTavandashti,  and M.Zandrahimi,  and B.Akbari,},  
title = {AGGLOMERATION ASSESMENT OF NANO-SIZED ALUMINA POWDERS}, 
abstract ={Abstract: Nanoparticles exhibit a high reactivity and strong tendency towards agglomeration. In this study, aluminum oxide (alumina) nanoparticles were characterized by gas adsorption (BET), transmition electron microscopy (TEM) and photon correlation spectroscopy (PCS) techniques to assess the agglomeration of the particles. There is a good correlation between the BET and TEM measurements but PCS was larger in the mean and median size and with a degree of agglomerates being detected. Some agglomeration was evident, but most of the particles existed as discrete objects as observed in the (HR) TEM images which were in good agreement with the agglomeration factor.},  
Keywords = {Agglomeration, Alumina, Aggregation, Nanoparticles, Thermal plasma},
volume = {6},
Number = {1}, 
pages = {15-19}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-154-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {S.R.AllahKaram,  and R.Shamani,},  
title = {A SURVEY ON THE EFFECT OF SOIL COMPOSITION IN CORROSION BEHAVIOR OF CATHODICALLY PROTECTED BURIED PIPELINES UNDER AC INDUCED CONDITION}, 
abstract ={Abstract: Due to the expansion of high voltage Alternating Current (AC) power transmission lines and cathodically protected buried pipelines, it is becoming more and more difficult to construct them with enough safe distances between them. Thus, the pipelines are frequently exposed to induced AC interferences, which result in perturbation of Cathodic Protection (CP) due to AC corrosion. To study the above criterion, an experimental set up was used with coupons exposed to simulated soil solutions, while under both CP and AC induced condition for which an AC+DC power supply was utilized. The experiments were carried out in several simulated soil solutions corresponding to several soil samples collected from various regions along a buried pipeline with overhead parallel high voltage power transmission line. The results indicated that AC corrosion depends strongly on the composition of the soil.},  
Keywords = {AC Corrosion, Monitoring, Soil Solution, IR-Free Potential, Pipeline.},
volume = {6},
Number = {1}, 
pages = {20-25}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-155-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.Ebrahimi-Basabi,,  and J.Javadpour,,  and H.Rezaie,  and M.Goodarzi,},  
title = {Mechanochemical synthesis of alumina nanoparticles}, 
abstract ={Abstract: Nano- size alumina particles have been synthesized by mechanical activation of a dry powder mixture of AlCl3 and CaO. Mechanical milling of the above raw materials with the conditions adopted in this study resulted in the formation of a mixture consisting of crystalline CaO and amorphous aluminum chlorides phases. There was no sign of chemical reaction occurring during milling stage as evidenced by x-ray diffraction studies. Subsequent heat treatment of the milled powder at 350ºC resulted in the occurrence of displacement reaction and the formation of Al2O3 particles within a water soluble CaCl2 matrix. The effect of higher temperature calcinations on the phase development in this powder mixture was followed by X-ray diffraction (XRD) analysis and scanning electron microscope ( SEM). Differential thermal analysis (DTA) was used to compare the thermal behavior between the milled and unmilled powders. Perhaps the most important result in this study was the observation of á-Al2O3 phase at a very low temperature of 500ºC.},  
Keywords = {Mechanochemical synthesis; AlCl3; CaO;Al2O3; Nanoparticle; Heat treatment; Phase development},
volume = {6},
Number = {1}, 
pages = {26-30}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-156-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {H.Aghajani,  and M.Soltanieh,  and F.Mahboubi,  and S.RastegariandKh.A.Nekouee,},  
title = {Formation of a hybrid coating by the use of plasma nitriding and hard chromium electroplating on the surface of H11 hot work tool steel}, 
abstract ={Abstract: Formation of a hybrid coating by the use of plasma nitriding and hard chromium electroplating on the surface of H11 hot work tool steel was investigated. Firstly, specimens were plasma nitrided at a temperature of 550 °C for 5 hours in an atmosphere of 25 vol. % H2: 75 vol. % N2. Secondly, electroplating was carried out in a solution containing 250 g/L chromic acid and 2.5 g/L sulphuric acid for 1 hour at 60 °C temperature and 60 A/dm2 current density. Thirdly, specimens were plasma nitrided at a temperature of 550 °C for 5 and 10 hours in an atmosphere of 25 vol. % H2: 75 vol. % N2. The obtained coatings have been compared in terms of composition and hardness. The compositions of the coatings have been studied by X-ray diffraction analysis. The surface morphology and elemental analysis was examined by using scanning electron microscopy. The improvement in hardness distribution after third step is discussed in considering the forward and backward diffusion of nitrogen in the chromium interlayer. Also, the formed phases in the hybrid coating were determined to be CrN+Cr2N+Cr+Fe2-3N+Fe4N.},  
Keywords = {H11 hot work tool steel, plasma nitriding, hard chromium electroplating, hardness.},
volume = {6},
Number = {1}, 
pages = {31-37}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-157-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {I.Ebrahimzadeh,  and Gh.H.Akbari,},  
title = {Effect of Microstructure and mechanical properties of horizontal continuous cast pipe of CuZn40Al1 alloy}, 
abstract ={Abstract: Horizontal continuous casting is widely used to produce semi-finished and finished metallic products. Homogeneity in metallurgical characteristics and mechanical properties in such products is of importance. In the present work microstructure and mechanical properties of a horizontal continuous cast pipe have been studied. Microstructural features were investigated by an optical microscope equipped with image analyzer and SEM was used to characterize precipitates. Tensile behavior, impact strength and hardness variations were the mechanical properties which were studied. Results showed that microstructure and mechanical properties had diversities in different parts of the pipe and distinct differences were observed between upper and lower parts of the pipe. A meaningful correlation was found in microstructure and mechanical properties in different parts of the component.},  
Keywords = {Continuous caster, two phase brasses, CiZn40Al1 alloy, Microstructure, Mechanical properties.},
volume = {6},
Number = {1}, 
pages = {38-44}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-158-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {A.Allahverdi,  and E.NajafiKani,},  
title = {APPLICATION OF FTIR-SPECTROSCOPY TECHNIQUE IN CHARACTERIZING MOLECULAR STRUCTURE OF NATURAL POZZOLAN-BASED GEOPOLYMER CEMENT}, 
abstract ={geopolymer cement (inorganic polymeric binder) based on natural pozzolan are investigated. SiOof activator and total molar ratios of Nacomposition exhibiting the highest 28-day compressive strength. Mixtures exhibiting the highest compressive strength were studied for their molecular structure using laboratory technique of Fourier transform infrared spectroscopy.Results obtained confirm that changes in chemical composition and curing condition can result in variations in degree of silicon substitution by aluminum in the second coordination sphere. Hydrothermal curing affects the molecular structure so that by increasing the hydrothermal curing temperatures, a lower degree of silicon substitution by aluminum in the second coordination sphere is observed. The molecular structure of the studied inorganic polymeric binde is composed of Si-O-Si chains bonded to Al-O and Si-O units creating two and three dimensional networks. In this paper, the effects of chemical composition and curing conditions on molecular structure of2/Na2O molar ratio2O/Al2O3, and H2O/Al2O3 were changed to determine the optimum chemical},  
Keywords = {Geopolymer; Natural Pozzolan; Molecular structure},
volume = {6},
Number = {2}, 
pages = {1-10}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-185-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {B.A.Ganji,  and B.YeopMajlis,},  
title = {VERY DEEP TRENCHES IN SILICON WAFER USING DRIE METHOD WITH ALUMINUM MASK}, 
abstract ={Abstract: In this paper, a DRIE process for fabricating MEMS silicon trenches with a depth of more than 250 m is described. The DRIE was produced in oxygen-added sulfur hexafluoride (SF6) plasma, with sample cooling to cryogenic temperature using a Plasmalab System 100 ICP 180 at different RF powers. A series of experiments were performed to determine the etch rate and selectivity of the some masking materials such as resists, and metal (Al). Experiments show that different materials have different etch rates, but for the Al mask, an etch rate of 5.44x10-3 nm/min was achieved, that exhibits very stronger resistance against RIE than resists. By controlling the major parameters for plasma etch, an etch rate of 2.85 microns per minute for silicon and a high selectivity of 5.24x105 to the Al etch mask have been obtained. A 90 min etching experiments using etching gas SF6 of 60 standard cubic centimeters per minutes (sccm) with oxygen (13 sccm) were performed by supplying RF power of 5 W to an ICP of 600 watts, and silicon etching process with a depth of 257 m was demonstrated. Our experiments show that Al is the best mask material for very deep trenches in silicon.},  
Keywords = {DRIE, deep trench, silicon structure, Al mask, etch rate, selectivity},
volume = {6},
Number = {2}, 
pages = {11-17}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-187-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {S.R.AllahKaram,  and R.Shamani,},  
title = {ANOVELMONITORINGTECHNIQUE TO DEFINE CP CRITERIA FOR BURIED PIPELINES UNDER AC CORROSION CONDITION}, 
abstract ={Abstract: The risks of alternating current (AC) corrosion and overprotection increasingly demand new criteria forcathodically protected pipelines. To assess the risk of AC corrosion, new cathodic protection (CP) criteria have beenproposed based on DC/AC current densities measurements using coupons. The monitoring system designed for thisproject was based on the instant-off method, with steel coupons simulating coating defects on a buried pipeline. Theproblems associated with the instantaneous off-potential measurements have been attributed to a non-sufficient timeresolution. In present study, it has been possible to determine the de-polarisation of steel coupon within a fewmilliseconds after disconnecting the coupon from the DC/AC power source, by increasing data acquisition rate. Forthis, a monitoring system was developed in order to measure the IR-free potential together with the DC/AC currentdensities. The monitoring system was utilized for both laboratory experiments and site survey to study the mechanismand the condition of AC corrosion, its mitigation and more importantly to define new CP criteria.},  
Keywords = {AC Corrosion, Cathodic Protection, Monitoring, IR-Free Potential, Pipeline.},
volume = {6},
Number = {2}, 
pages = {18-23}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-188-en.html},  
eprint = {http://ijmse.iust.ac.ir/article-1-188-en.pdf},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.Ardestani,,  and H.Razavizadeh,,  and H.Arabi,  and H.R.Rezaie,},  
title = {PREPARATION AND SINTERING OF W-20%Wt Cu COMPOSITE POWDERS PRODUCED BY CO-PRECIPITATION METHOD}, 
abstract ={Abstract: materials can be fabricated by sintering of W-Cu composite powders. In this research W-20%wt Cu composite powderswas synthesized via a co-precipitation method. Precipitate obtained from a mixture of copper nitrate and ammoniumparatungstate (APT) in distilled water contained W-Cu compounds. This precipitate was washed, dried and calcinedat 550 of dried precipitate powder was determined by thermogravimetry (TG), differential thermal analysis (DTA) and X-raydiffraction (XRD). The sintering of the reduced powders was investigated as a function of temperature. Relative densityof more than 98% obtained for the powders sintered at 1200close to theoretical calculations. The hardness of the sintered powders was 320 Vickers.W-Cu composites are widely used as contacts, heat sinks and electro discharge electrodes. These kinds of°C in air and then reduced in H2 atmosphere in order to convert to W-Cu powders. The calcination temperature°C . The corresponding electrical conductivity was too},  
Keywords = {Keywords: W-Cu composites; Co-precipitation; Thermal analysis.},
volume = {6},
Number = {2}, 
pages = {24-29}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-204-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {A.H.Emami,  and M.Sh.Bafghi,  and J.VahdatiKhaki,  and A.Zakeri,},  
title = {THE EFFECT OF GRINDING TIME ON THE SPECIFIC SURFACE AREA DURING INTENSIVE GRINDING OF MINERAL POWDERS}, 
abstract ={Abstract: the changes of BET surface area of a mineral substance during intensive grinding process. Validity of the proposedmodel was tested by the experiments performed using a natural chalcopyrite mineral as well as the published data. Itwas shown that the model can predict the experimental results with a very good accuracy and can be used to predictwhat may happen under the similar experimental conditions.Based on experimental observations, a model has been developed to describe the effect of grinding time on},  
Keywords = {Keywords: Modeling, Minerals, Chalcopyrite, Ball milling, Specific surface area},
volume = {6},
Number = {2}, 
pages = {30-36}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-205-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {H.Mohammadzade,  and SH.Kheirandish,  and H.Saghafian,},  
title = {EFFECT OF GRAPHITE FLAKES ON THE MICROSTRUCTURE OF MELTED, TRANSITION AND HEAT AFFECTED ZONES IN GREY CAST IRON REMELTED BY TIG}, 
abstract ={Abstract:transition and heat affected zones formed during surface remelting (in order to improve wear resistance) with TIGprocess has been investigated. Relationship between various TIG parameters and thickness of remelted and heataffected zones revealed that a high concentrated heat energy is imposed by TIG process which makes it a proper optionfor focused surface treatment. Based on microstructural examinations five areas with different microstructure andmicrohardness were identified within the surface area. Graphite flakes were totally dissolved within the first arealeading to the transformation of denderitic austenite to plate martensite and the formation of ledeburite withininterdenderites. The main feature of the second area, resulted from the presence of graphite flakes, was the localmelting with a gap in the vicinity of graphite flakes and that of third area was the formation of finer and densermartensite plates closer to the graphite flakes compared with those formed at a further distance. In the fourth layerthere is a mixture of martensitic and pearlitic matrix while the matrix of fifth layer has no change of microstructure.In this study the effect of graphite flakes present in a pearlitic grey cast iron on the microstructure of melted,},  
Keywords = {Keywords: surface remelting, grey cast iron, TIG, local remelting},
volume = {6},
Number = {2}, 
pages = {37-45}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-202-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.J.Tafreshi1,  and M.Fazli2,},  
title = {DESIGN AND FABRICATION OF A SOPHISTICATED VERNEUIL SYSTEM}, 
abstract ={Abstract: fabricated. Modifications carried out in different parts of the old system in order to control mostof the growth parameters with more accuracy. The fabricated system was used to grow sapphiresingle crystals with almost 10 mm in diameter and 50 mm in length. The crystallinity andstructure of the grown crystals were characterized by computer aided single crystal X-raydiffraction technique.A Verneuil system, more sophisticated than a conventional one, has been designed and},  
Keywords = {Keywords: crystal growth, sapphire, flame fusion, Verneuil, structural analysis.},
volume = {6},
Number = {2}, 
pages = {46-51}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-203-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {S.Zavareh,  and F.Majedi,,  and M.Sh.Sharif,  and F.Golestanifard,},  
title = {PREPARATION OF FUNCTIONALIZED MWCNTS COATING WITH MgO VIA SIMPLE PRECIPITATION METHOD}, 
abstract ={Abstract: Multiwalled carbon nanotubes (MWCNTs) were coated with MgO nano particles using simple precipitationmethod. The growth of Mg(OH)2particles was controlled by adjusting the alkaline concentration, salt concentrationand feed rate in simple precipitation method. The nanometer-sized Mg(OH)2particles were precipitated on the surfaceof functionalized MWCNTs by reaction between MgSO4 solution and NH4OH. The samples have been characterizedby scanning electron microscopy, energy dispersive X-ray spectrometry, X-ray diffraction and thermal gravimetricanalysis. The results showed a nominally complete MgO coating over the entire outer surface of MWCNTs resulting inimprovement of their oxidation durability.},  
Keywords = {Keywords:Carbon nanotube, Coating, Precipitation method},
volume = {6},
Number = {3}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-195-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.Goodarzi,  and S.M.A.Boutorabi,  and M.A.Safarkhanian,},  
title = {EFFECTOFROTATIONALSPEED (Ù) ON THE PARTICLES BREAK UPAND HARDNESS VALUES IN 2024-T851 FRICTION STIR WELDS}, 
abstract ={Abstract:In this study, an effort has been made to determine the influence of rotational speed of tool on themicrostructure and hardness values of friction stir welded 2024-T851 aluminum alloy. The microstructure of stir zonein the joints has been investigated. It was found that the particles such as Al6(CuFeMn) particles are broken up duringfriction stir welding, and the degree of break up of these particles in the stir zone increases with increasing rotationalspeed. Since the break up of these particles and the recrystallization of new grains happen simultaneously, the brokenparticles would be placed in the grain boundaries. Moreover, the hardness value in the stir zone increases withincreasing rotational speed},  
Keywords = {Keywords:Friction stir welding, Aluminum alloys, Microstructure, Particles, Hardness},
volume = {6},
Number = {3}, 
pages = {7-14}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-196-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {A.Shokuhfar,  and S.Ahmadi,  and H.Arabi,  and S.Nouri,},  
title = {MECHANISMS OFPRECIPITATES FORMATION IN AN Al- Cu- Li-ZrALLOYUSINGDSC TECHNIQUE AND ELECTRICALRESISTANCE MEASUREMENTS}, 
abstract ={Abstract: Guinier-Preston (GP) zone formation and precipitation behavior of T1 (Al2CuLi) phase during the ageingof an Al-Cu-Li-Zr alloy was studied by differential scanning calorimetry (DSC) technique and electrical resistancemeasurement of the samples. Results show that endothermic effects in the thermograms of the alloy between 180°Cand 240°C can be related to the enthalpy of GPzones dissolution. Formation of GPzones in the structure increasedhardness, tensile strength and electrical resistance of the Al-Cu-Li-Zr alloy. Furthermore, precipitation of T1 phaseoccurred in temperature range of 250ºC to 300ºC whereas its dissolution occurred within the temperature of 450-530ºC. Activation energies for precipitation and dissolution of T1 phase which were determined for the first time inthis research, were 122.1(kJ/mol) and 130.3(kJ/mol) respectively. Results of electrical resistance measurementsshowed that an increase in the aging time resulted in the reduction of electrical resistance of the aged samples.},  
Keywords = {Keywords: aluminum- lithium alloys, DSC; activation energy, natural aging, Al-Cu-Li-Zr alloy, T1 phase, dissolutionenergies},
volume = {6},
Number = {3}, 
pages = {15-20}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-197-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.OzveAminian,  and J.Hedjazi,  and Y.Kharazi,},  
title = {THE OXIDATION RESISTANCE OF HIGH ALUMINUM HEAT RESISTANT STEELS}, 
abstract ={Abstract: In this research, the oxidation behaviour of high Aluminum heat resistant steel (%25Cr,%20Ni,%8Al) hasbeen evaluated at the temperature range of (1000-1300ºC).The results showed that there was no countinous healinglayer on the surface of the alloy when Al increased up to %5.5 and the oxidation resistance of steel decreased due toformation of spinel oxides on the surface.By increasing the aluminum amount to %8, only Al oxide formed due to decreasing carbon potential of thealloy,homogenity of elemental concentration in matrix and no diffusion of  oxygen through oxide–metalinterface,therefore it has superior oxidation resistance. Meanwhile,oxidation tests showed that the weight gain of thesteel at high temperature oxidation even at 1300ºC was too low.},  
Keywords = {Keyword : High Aluminum steel, Heat resistant steel, Oxidation resistance, Protective -Al2O3.},
volume = {6},
Number = {3}, 
pages = {21-28}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-198-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {Ali.A.Hosseini,,  and F.Ghaharpour,  and H.Rajaei,},  
title = {INVESTIGATION OFPHYSICALAND MECHANICALPROPERTIESOFALNANOCOMPOSITE REINFORCED WITH CNTS}, 
abstract ={Abstract: In this paper‚ the physical and mechanical properties of Al nanocomposite reinforced with CNTs wereinvestigated. High purity Al powder and Carbon Nanotubes (CNTs) with different percentage were mixed by ballmilling method and the composite was fabricated by cold pressing followed by sintering technique. The variation ofdensity and hardness of composite with CNTcontent was investigated. The microstructure of composite was evaluatedby SEM (Scanning Electron Microscope) and XRD (X -Ray Diffraction). The results show that the density and hardnessincrease with CNTpercentage.},  
Keywords = {Keywords:Carbon Nanotube, Nanocomposite, Cold Pressing, Sintering.},
volume = {6},
Number = {3}, 
pages = {29-34}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-199-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {B.Mirzakhani,Mohammadi,  and H.Arabi,S.H.Seyedein,M.R.Aboutalebi,  and M.T.Saleh,  and Sh.Khoddam,},  
title = {COMPUTER AIDED OPTIMIZATION OF SPECIMEN GEOMETRY OF HOT TORSION TEST TO MINIMIZE MICROSTRUCTURE NONHOMOGENEITY AND TEMPERATURE GRADIENT BEFORE DEFORMATION}, 
abstract ={Abstract:Optimization of specimen geometry before subjecting it to hot torsion test (HTT) is essential for minimizingnon-uniform temperature distribution and obtaining uniform microstructure thought the specimen.In the present study, a nonlinear transient analysis was performed for a number of different geometries andtemperatures using the commercial finite element (FE) package ANSYSTM. FE thermal results then were applied tooptimize HTTspecimen produced from API-X 70 microalloyed steel taking into account the microstructurehomogeneity.  The thermodynamic software Thermo-calcTM was also used to analysis solubility of microalloyingelements and their precipitates that may exist at different equilibrium conditions. In addition the behavior of austenitegrain size during reheating was investigated. The results show high temperature gradient occurred in long specimens.This could lead to non homogeneous initial austenite grain size and alloying element or precipitates within the gaugesection of the specimen. The proposed optimization procedure can in general be used for other materials and reheatingscenarios to reduce temperature. This then creates more homogeneous initial microstructure prior to deformation andreduces errors in post processing of the HTTresults},  
Keywords = {Keywords:Hot torsion test, temperature gradient, Geometry optimization, Simulation, Microalloyed steel},
volume = {6},
Number = {3}, 
pages = {35-43}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-200-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {A.Davoodi,  and J.Pan,Ch.Leygraf,  and Gh.R.Ebrahimi,  and M.Javidani,},  
title = {NANO- SCALE LOCALIZED CORROSION STUDIES OFEN AW- 3003ALALLOYBYSEM-EDS, SKPFM AND IN-SITU AFM}, 
abstract ={Abstract: Localized corrosion of aluminum alloys is often triggered by intermetallic particles, IMP’s. To understandthe role of IMP’s in corrosion initiation of EN AW-3003, efforts were made to combine nano-scale ex-situ analysis ofthe IMP’s by SEM-EDS, SKPFM and in-situ AFM monitoring of the localized attack in chloride containing solution.The results showed that two distinct types of eutectically-formed constituent IMP’s exist the -Al(Mn,Fe)Si and theAl(Mn,Fe) phases. However, the exact chemical composition of the IMP’s varies with the particles size. Volta potentialdifference of surface constituents revealed that IMP’s have a higher Volta potential compared to the matrix, indicatingthe cathodic characteristic of the IMP’s. Noticeably, the boundary regions between the matrix and IMP’s exhibited aminimum Volta potential probably the sites for corrosion initiation. Localized corrosion attack monitored by in-situAFM clearly showed the trench formation occurrence around the large elongated IMP’s in the rolling direction.},  
Keywords = {Keywords: Localized corrosion, Aluminum alloys, SEM-EDS, SKPFM, in-situ AFM.},
volume = {6},
Number = {3}, 
pages = {44-50}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-201-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {BahmanMirzakhani,  and HosseinArabi,MohammadTaghiSalehi,SeyedHosseinSeyedein,MohammadRezaAboutalebi,  and ShahinKhoddam,  and JiltSietsma,},  
title = {PREDICTION OF STATIC SOFTENING OF MICROALLOYED STEEL BY THE INTEGRATION OF FINITE ELEMENT MODEL WITH PHYSICALLY BASED STATE VARIABLE MODEL}, 
abstract ={  Abstract   Recovery and recrystallization phenomena and effects of microalloying elements on these phenomena are of great importance in designing thermomechanical processes of microalloyed steels. Thus, understanding and modeling of microstructure evolution during hot deformation leads to optimize the processing conditions and to improve the product properties.   In this study, finite element method was utilized to simulate thermomechanical parameters during hot deformation processes. FEM results then were integrated with physically based state variable models of static recovery and recrystallization combined with a realistic microstructural geometry. The thermodynamic software Thermo-calc was also used to predict present microalloying elements at equilibrium conditions. The model performance was validated using stress relaxation tests. Parametric studies were carried out to evaluate the effects of deformation process parameters on the microstructure development following hot deformation of the API-X70 steel},  
Keywords = {Keywords: Finite element method, physically based state variable model, Microalloyed steel, Static softening},
volume = {6},
Number = {4}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-213-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {JavadBahrami,  and MohammadHosseinPaydar,  and NaderSetoudeh,  and MohammadHosseinShariat,},  
title = {Studies on the effect of mechanically activating ilmenite concentrate using an attritor on its subsequent iron removal potential and kinetics of dissolution in hydrochloric acid}, 
abstract ={  Abstract   The effect of mechanical activation using an attrition mill on the particle size of an ilmenite concentrate and its effect on the ability of the concentrate for Iron separation during hydrochloric acid leaching and the kinetics of the dissolution process have been investigated. It was observed that mechanical activation in an attritor significantly enhances the dissolution of iron in hydrochloric acid while have a slight effect on dissolution of titanium. With the mechanically activated ilmenite using an attrition mill, leaching conversion at 90 oC reached to 80%. The kinetic data of leaching of mechanically activated ilmenite was found to follow shrinking core model. Mechanically activating ilmenite using the attrition mill was found to cause the activation energy of leaching to be decrease from 43.69 , found for samples leached without mechanically activated, to 18.23 .},  
Keywords = {Keywords: mechanical activation, ilmenite, kinetics of hydrochloric, acid leaching},
volume = {6},
Number = {4}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-212-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {M.Shahmiri,  and ,H.Arabi,},  
title = {INFLUENCE OF THE PRIMARY SOLIDIFICATION ON THE SECONDARY SOLIDIFICATION DURING SEMISOLID METAL (SSM) PROCESSING OF A356.0 ALUMINUM ALLOY BY MECHANICAL STIRRING}, 
abstract ={  Abstract:   The aims of this research were to investigate the effects of semisolid metal (SSM) processing parameters (i.e., shear rates –times – temperatures combinations) on the primary solidification products and isothermal holding duration, subsequent to cessation of stirring on the secondary solidification of Al-Si (A356) alloy.   The dendrite fragmentation was found to be the governing mechanism of the primary dendritic to non-dendritic transformation, via rosette to final pseudo-spherical shapes during the primary solidification The secondary solidification of the liquid in the slurry was not only a growth phenomenon but also promoted by 1) fresh heterogeneous nucleation and growth of dendrites and 2) the dendritic growth of the primary solidification products in the remaining liquid. Upon cessation of stirring and gradual disappearance of the prior shear force, the slurry relaxed, and the secondary solidification products pertained to conventional solidification condition},  
Keywords = {Key words:   Semisolid metal (SSM) Processing. Aluminum Alloy A.356. },
volume = {6},
Number = {4}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-211-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {ArashYazdani,  and MansourSoltanieh,  and HosseinAghajani,},  
title = {STUDY ON CORROSION PROPERTIES OF PLASMA NITRIDED PURE ALUMINIUM}, 
abstract ={Abstract: In this research plasma nitriding of pure aluminium and effect of iron elemental alloy on the formation and growth of aluminium nitride was investigated. Also corrosion properties of formed AlN were investigated. After preparation, the samples were plasma nitrided at 550oC, for 6, 9 and 12 h and a gas mixture of 25%H2-75%N2. The microstructure and phases analysis were investigated using scanning electron microscopy and X-ray diffraction analysis. Moreover corrosion resistance of samples was investigated using polarization techniques. The results showed that only a compound layer was formed on the surface of samples and no diffusion zone was detected. Dominant phase in compound layer was AlN. Scanning electron microscopy results showed that nitride layer has particulate structure. These nitrided particles have grown columnar and perpendicular to the surface. It was also observed that the existence of iron in the samples increases the nitrogen diffusion, thus growth rate of iron containing nitrides are higher than the others. Corrosion tests results showed that formation of an aluminium nitride layer on the surface of aluminium decreases the corrosion resistance of aluminium significantly. This is due to elimination of surface oxide layer and propagation of cracks in the formed nitride layer},  
Keywords = {Keywords: Aluminium, Aluminium nitride, Plasma nitriding, Corrosion.},
volume = {6},
Number = {4}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-210-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {B.Tolaminejad,  and A.KarimiTaheri,  and H.Arabi,  and M.Shahmiri,},  
title = {AN INVESTIGATION INTO THE EFFECT OF ECAE PROCESS ON MECHANICAL AND MICROSTRUCTURAL PROPERTIES OF MIDDLE LAYER IN COPPER CLAD ALUMINUM COMPOSITE}, 
abstract ={Abstract: Equal channel angular extrusion (ECAE) is a promising technique for production of ultra fine-grain (UFG) materials of few hundred nanometers size. In this research, the grain refinement of aluminium strip is accelerated by sandwiching it between two copper strips and then subjecting the three strips to ECAE process simultaneously. The loosely packed copper-aluminium-copper laminated billet was passed through ECAE die up to 8 passes using the Bc route. Then, tensile properties and some microstructural characteristics of the aluminium layer were evaluated. The scanning and transmission electron microscopes, and X-ray diffraction were used to characterize the microstructure. The results show that the yield stress of middle layer (Al) is increased significantly by about four times after application of ECAE throughout the four consecutive passes and then it is slightly decreased when more ECAE passes are applied. An ultra fine grain within the range of 500 to 600 nm was obtained in the Al layer by increasing the thickness of the copper layers. It was observed that the reduction of grain size in the aluminium layer is nearly 55% more than that of a ECA-extruded single layer aluminium billet, i.e. extruding a single aluminium strip or a billet without any clad for the same amount of deformation. This behaviour was attributed to the higher rates of dislocations interaction and cell formation and texture development during the ECAE of the laminated composite compared to those of a single billet},  
Keywords = {Keywords: Severe plastic deformation; Laminated composite; Equal channel angular extrusion; UFG materials; Aluminium/Copper.},
volume = {6},
Number = {4}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-209-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {SeyyedMasoodBagheri,  and JamalZamani,  and AliMehdipourOmrani,},  
title = {A new approach to predict of mechanical properties at the interface of Aluminium/Copper explosive cladding by explosive scarf welding}, 
abstract ={Abstract: The purpose of this study is to produce scarf joint through explosive welding process (EXW). The scarf weld is a process in which the final bond interface is oblique. With applying the explosive welding technique, this joint can create a metallic bond between similar or dissimilar metals. In this study, chamfered end of aluminum and copper plates were joined explosively and named scarf joint, employing changes in chamfered angle at different stand-off distance and explosive loading. The geometry of scarf joint enables consideration of both flyer and base plate thickness and explosive loading and the effects on mechanical properties of interface such as bond shear strength and micro-hardness can be investigated. Mathematical models developed for the interface properties of scarf joint to make relationship between the bond shear strength and explosive loading ratio. To check the adequacy of developed models, mechanical properties of interface, such as bond shear strength, predicted and compared with actual values in explosive cladding process. The results show reasonable agreement with theoretical predictions. Consequently, mathematical model which is based on scarf joints, can predict bond shear strength of cladding metals under desired explosive loading and flyer plate thickness},  
Keywords = {Keywords: Explosive welding; Scarf Joint; Shear strength; Micro-hardness; loading ratio.},
volume = {6},
Number = {4}, 
pages = {0-0}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-208-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}

@article{ 
author = {A.Bahrami,  and M.R.Hosseini,  and M.Pazouki,},  
title = {THE SHAKING TABLE CONCENTRATOR: INFLUENCE OF TABLE PARAMETERS ON MANGANESE CONCENTRATION}, 
abstract ={Abstract: point of view. In this study, a shaking-table was used for concentrating a manganese ore sample from the Ghasem Abadarea in Kerman, Iran. Experiments were designed by using LThe influence of each variable and their interactions on the operation of the device was studied. The variables underinvestigation were: table slope, table frequency, water flowrate, feed rate, and particle size. The manganeseconcentrate grade, recovery, and separation efficiency were used as response variables. It was shown that waterflowrate, table slope, feed rate, and particle size are the significant variable on concentrate grade while, all thevariables influence manganese recovery. Also, water flowrate, table slope, and table frequency have an importanteffect on manganese separation efficiency. Finally, three mathematical models were presented to predict the values ofeach response variables.Among all gravity concentration methods, the shaking-table is the most effective one from the metallurgical8 Taguchi design with five variables, each in two levels.},  
Keywords = {Shaking table; Manganese; Grade; Recovery; Separation efficiency},
volume = {6},
Number = {4}, 
pages = {52-60}, 
publisher = { Iran University of Science & Technology},
title_fa = {},
abstract_fa ={},
keywords_fa = {},
url = {http://ijmse.iust.ac.ir/article-1-214-en.html},  
eprint = {},  
journal = {Iranian Journal of Materials Science and Engineering},  
issn = {1735-0808}, 
eissn = {2383-3882}, 
year = {2009}  
}