High-Temperature wear behavior of FSPed AA6061-SiC nanocomposites: Microstructural strengthening and tribolayer stability
The high-temperature wear behavior of friction stir processed AA6061 and AA6061-SiC nanocomposites was investigated from 25°C to 300°C. The nanocomposite exhibited an 80% reduction in wear loss (quantified as cross-sectional wear area) at 300°C and stable friction, while the unreinforced alloy showed a sharp transition to severe wear above 200°C. Microindentation revealed a sixfold increase in H 3 /Er 2 with SiC addition, indicating a consistent relationship between resistance to plastic deformation and wear performance. SEM/EDS confirmed the formation of stable oxygen- and Si-rich tribolayers in the nanocomposite. These findings suggest potential for consideration in high-temperature tribological applications. The superior performance arises from Hall-Petch and Orowan strengthening combined with enhanced tribolayer stability.
Authors
- Hamidreza Farnoush (ORCID: https://orcid.org/0000-0001-9935-9926)
- Mojtaba Salehi (ORCID: https://orcid.org/0000-0002-0187-8566)
- M. Abedini (ORCID: https://orcid.org/0000-0003-0933-7964)
- Amir Motallebzadeh (ORCID: https://orcid.org/0000-0001-6753-9316)
Institutions
- University of Kashan (IR)
- Koç University (TR)
- National University of Singapore (SG)
- Istanbul Technical University (TR)
- University of Duisburg-Essen (DE)
Publication Details
- Journal
- Materials Science and Technology
- Published
- 2026-09-12
- DOI
- https://doi.org/10.1177/02670836261487916
- Primary Topic
- Aluminum Alloys Composites Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.00