Publication: High-temperature wear behavior of fsped AA6061-SiC nanocomposites: microstructural strengthening and tribolayer stability
Program
KU-Authors
KU Authors
Co-Authors
Farnoush, H.
Abedini, M.
Salehi, M.
Editor & Affiliation
Compiler & Affiliation
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Other Contributor
Date
Language
eng
Type
Embargo Status
Journal Title
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Volume Title
Alternative Title
Abstract
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.
Source
Publisher
SAGE Publications
Subject
Physical sciences, Engineering, Mechanical engineering, Materials science, Ceramics and composites
Citation
Has Part
Source
Materials Science and Technology
Book Series Title
Edition
DOI
10.1177/02670836261487916