Volume 19 - Number 3 - 2022-9 - Iranian Journal of Materials Science and Engineering

Volume 19, Issue 3 (September 2022)

Resin-based Copper-free Brake Pads: A Right Selection of Potassium Titanate and Ceramic Fiber

P. 1-15

‎ 10.22068/ijmse.2320

Hamid Ansari

Abstract (13718 Views) | Full-Text (PDF) (4975 Downloads) | Graphical Abstract | Highlights

High Photocatalytic Performance in the Photodegradation of MB Dye of Photocatalytic Efficiency of ZnO/Fe3O4 and TiO2/Fe3O4 Under Visible Light Irradiation

P. 1-8

‎ 10.22068/ijmse.2461

M.J Kadhim

, Fatima Allawi

, M. A. Mahdi

, Sami Najah Abaas

Abstract (14866 Views) | Full-Text (PDF) (4412 Downloads) | Graphical Abstract | Highlights

Evaluation of Microstructure and Mechanical Properties of Thermomechanically Processed β Ti‐35Nb‐7Zr‐5Ta Alloy

P. 1-8

‎ 10.22068/ijmse.2504

Behzad Pourghasemi

, Vahid Abouei

, Omid Bayat

, Banafsheh Karbakhsh Ravari

Abstract (13996 Views) | Full-Text (PDF) (4282 Downloads)

Effects of Al Doping on the Properties of Li7La3Zr2O12 Garnet Solid Electrolyte Synthesized by Combustion Sol-gel Method

P. 1-10

‎ 10.22068/ijmse.2631

Omid Sharifi

, Mohammad Golmohammad

, Mozhdeh Soozandeh

, Mohammad Oskouee

Abstract (14563 Views) | Full-Text (PDF) (4886 Downloads) | Graphical Abstract | Highlights

Structural and Optical Characterization of ZnO-Graphene Nanocomposite Quantum Dots

P. 1-13

‎ 10.22068/ijmse.2603

Saba Payrazm

, Saeid Baghshahi

, Zahra Sadeghian

, Amirtaymour Aliabadizadeh

Abstract (15258 Views) | Full-Text (PDF) (4569 Downloads) | Graphical Abstract | Highlights

Wear Properties of Al/MoS2 Nanocomposite Coatings Created by Electro Spark Deposition on the Surface of Ti-6Al-4V Alloy

P. 1-20

‎ 10.22068/ijmse.2639

Mohammad Roostaei

, Hossein Aghajani

, Majid Abbasi

, Behzad Abasht

Abstract (18463 Views) | Full-Text (PDF) (4327 Downloads) | Graphical Abstract

Preparation of Nanohybrid CuO-Fe3O4 /Zeolite Nanocomposite as Potential Adsorbent for Toxic As (V) and Pb(II) from Water Solution.

P. 1-13

‎ 10.22068/ijmse.2606

Abdullah Alswata

, Shaimaa Ali

, Fares Alshorifi

Abstract (15915 Views) | Full-Text (PDF) (4576 Downloads) | Graphical Abstract | Highlights

Room Temperature Cured Hydrophobic Nano-silica Coatings for Outdoor Insulators Installed on Power Lines without Shutting Down the Current

P. 1-12

‎ 10.22068/ijmse.2598

Pooyan Soroori

, Saeid Baghshahi

, Arghavan Kazemi

, Nastaran Riahi Noori

, Saba Payrazm

, Amirtaymour Aliabadizadeh

Abstract (20810 Views) | Full-Text (PDF) (4490 Downloads) | Graphical Abstract | Highlights

The Influence of Heat Treatment and High Energy Ball Milling on the Density, Hardness, and Wear Behavior of Al 7150 Alloy via Hot Uniaxial Compaction

P. 1-13

‎ 10.22068/ijmse.2618

Abdur Rahman

, Serajul Haque

Abstract (12793 Views) | Full-Text (PDF) (4343 Downloads) | Graphical Abstract | Highlights

1. According to XRD examination, the widening of the diffraction pattern could very well be attributable to the increase in the duration of milling from 0 to 20 hours, showing that perhaps the nano-crystalline state had been established as a result of HEBM. The emergence of MgZn₂ precipitates due to the combined application of heat and pressure was validated by XRD examination.
2. The relative density was inversely proportional to the increase in milling time which reduced the particle size from 0 to 49 nm after 20 h of milling of the base powders.
3. Owing to the precipitation hardening phenomena, the microhardness of all the specimens steadily enhanced after 3, 6, 12, and 24 hours of artificial ageing at 115°C. Peakage hardness was attained at 24 h of ageing, beyond which the microhardness (VHN) of all the specimens, regardless of particle size, began to decline. Overageing occurred after 96 h of ageing.
4. When compared to the other specimens, the T6 treated Al 7150 alloy made of milled powders of 49 nm size showed a superior microhardness of 255 VHN. This is due to the particle size reduction due to increasing the duration of milling as well as close packing of the powders under the influence of the simultaneous application of pressure and heat during hot pressing.
5. Pin on disc wear testing conducted under varying loads and sliding speeds showed the beneficial effect of artificial ageing in enhancing the wear behavior of the T6 treated samples.
6. The capacity of the T6 specimens to withstand the dry sliding wear loads throughout pin-on-disc wear testing can be attributed to the development of (MgZn₂) precipitates, which slowed dislocation movements.
7. The T6 sample’s HRTEM microstructure showed a high density of MgZn₂ precipitates dispersed evenly in the Al 7150 alloy matrix, the precipitates comprising of the metastable η′ phase, with lesser amounts of GP zones and the stable η phase were observed.
8. FESEM morphology revealed extensive damage on the wear specimen’s surface due to severe plastic deformation during wear testing, indicating poor wear resistance of the non-aged samples. A mixture of adhesive, delamination and abrasive wear modes was identified during FESEM analysis.
9. The current study concludes that by optimizing the process parameters such as milling time, ageing as well as reducing the particle size of the base powders, the hardness and wear behavior of Al 7150 alloy may be improved.