Effect of Heat Treatment and Si3N4/Graphene Content on the Tribological and Mechanical Properties of Aluminum Hybrid Composites
ADVANCED POWDER TECHNOLOGY, cilt.37, ss.1-15, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 37
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.apt.2026.105363
- Dergi Adı: ADVANCED POWDER TECHNOLOGY
- Derginin Tarandığı İndeksler: Scopus, Science Citation Index Expanded (SCI-EXPANDED), Compendex, INSPEC
- Sayfa Sayıları: ss.1-15
- Ondokuz Mayıs Üniversitesi Adresli: Evet
Özet
In this study, Al7075-Si3N4-graphene hybrid composites were fabricated via powder metallurgy and induction hot pressing techniques. Al7075 matrix was reinforced with 1, 3, 6, 9, and 12 wt% Si3N4 and 0.1, 0.3, and 0.5 wt% graphene. The effects of reinforcement ratios and heat treatment types (sintering and induction hot pressing) on the tribological properties and mechanical properties of the composites were examined. As a result of the tests, maximum density (2.68 g/cm3 ), Vickers hardness (238 HV), compressive strength (378 MPa), and minimum wear rate (0.000157 mm3 /Nm), mass loss (0.0021 g) were obtained in the induction hot pressed Al7075-9%Si3N4-0.1%graphene composite. Test results indicated that Vickers hardness and compressive strength increased by 98.3% and 31.9% in induction hotpressed Al7075-9%Si3N4-0.1%GNPs hybrid composite compared to Al7075 alloy. As a result, it was determined that the mechanical and tribological properties of the composite could be improved up to a certain amount of Si3N4 (9 wt%) and graphene (0.1 wt%). Additionally, the induction hot pressing technique reduced the porosity in the microstructure compared to only sintering process.