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논문 기본 정보

자료유형
학술저널
저자정보
Mehran Karimi Estahbanati (Sharif University of Technology) Mojtaba Movahedi (Sharif University of Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.30 No.2
발행연도
2024.2
수록면
284 - 302 (19page)
DOI
10.1007/s12540-023-01498-4

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초록· 키워드

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Al1050/(Fe–Cu) hybrid surface composite was produced using friction stir processing (FSP). The effects of the weightfraction ratio of Fe and Cu powders in the composite and the process pass number (3 and 5 passes) were investigated onthe wear performance and microstructural features of the composite. The results showed that Al–Fe and Al–Cu binary andAl–Fe–Cu ternary intermetallic compounds were in-situ formed at the interface of the Fe–Cu powders and Al matrix. Nonuniformdistribution of the micron-sized and sub-micron particles in the stir zone had a main role in the formation of thebi-modal grain structure in the composite. The average friction coefficient of the composites decreased (up to ~ 40%) andthe wear resistance of the composites improved (up to ~ 85%) compared to the specimen processed without the reinforcingparticles. The composites with the equal weight fraction of Fe and Cu particles and the composites processed at 5 FSP passesshowed superior wear performance. The wear mechanism was changed from the adhesive wear in the 75Cu–25Fe-3 passesand 75Fe–25Cu-3 passes composites to the delamination wear in the 50Fe–50Cu-5 passes composite. The mentioned resultswere discussed in the light of the metallurgical aspects of the produced composites, i.e. uniformity of the aluminum matrixgrain structure and distribution of the reinforcing particles as well as the amount of the intermetallic compounds formed inthe composites.

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