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논문 기본 정보

자료유형
학술저널
저자정보
Qing Zhang (China Agricultural University) Shuo Wei (Beijing Institute of Space Launch Technology) Jie Gu (Beijing Institute of Space Launch Technology) Ming Qi (Beijing Institute of Space Launch Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.9
발행연도
2021.9
수록면
3,641 - 3,651 (11page)
DOI
10.1007/s12540-020-00654-4

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초록· 키워드

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The high-temperature dry sliding wear behavior of an Al?12Si?CuNiMg alloy and its composite reinforced with Al2O3fibersare investigated at 27 °C, 100 °C, 200 °C, and 300 °C. Wear tests are conducted under a constant sliding velocity of 1 m/sand various normal loads ranging from 2.5 to 10 N. To investigate the influence of temperature on the wear mechanisms, theworn surfaces of the matrix alloy and composite surfaces are carefully examined using scanning electron microscopy andenergy dispersive spectroscopy. At 100?200 °C, the wear resistance of the composite increases, with the highest resistancerecorded at 200 °C. The wear resistance decreases with the increase in the temperature from 200 to 300 °C. The wear resistanceof the matrix alloy decreases as the temperature increases from 200 to 300 °C; however, it does not exhibit better wearresistance than the composite in the same temperature range. Furthermore, the friction coefficients of these two materialsare discussed. The worn surface analysis performed at different temperatures indicates that the dominant wear mechanismsof both materials are related to adhesion and delamination under the chosen test conditions.

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