Significant reduction in friction and wear of a high-entropy alloy via the formation of self-organized nanolayered structure

被引：63
作者：
Yang, Lu [1 ]
Cheng, Zhuo [1 ]
Zhu, Weiwei [1 ,2 ]
Zhao, Cancan [1 ]
Ren, Fuzeng [1 ]
机构：
[1] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
[2] Univ Macau, Fac Sci & Technol, Inst Appl Phys & Mat Engn, Taipa, Macao, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2021年 / 73卷
关键词：
High-entropy alloy; Sliding wear; Nanolayering; SLIDING WEAR; MECHANICAL-PROPERTIES; CU-AG; EVOLUTION; MICROSTRUCTURE; STRENGTH; TEMPERATURE; RESISTANCE; BEHAVIOR; ELEMENTS;
D O I：
10.1016/j.jmst.2020.08.065
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sliding wear-induced nanolayering and its positive impact on wear resistance have been observed in conventional binary alloys with a matrix of high stacking fault energy (SFE), but this concept has never been reported in high-entropy alloys (HEAs) with low SFE. Here, we design and fabricate a (CoCrFeNi)(90)Ag-10 HEA, consisting of a face-center-cubic (fcc) CoCrFeNi HEA matrix with low SFE and uniformly dispersed Ag precipitates. In comparison with CoCrFeNi, a significant reduction in friction and wear was found in (CoCrFeNi)(90)Ag-10 HEA through the spontaneous formation of nanolayered subsurface microstructure during wear. The finding suggests a novel approach for designing HEAs that can achieve low friction and wear. (C) 2021 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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页码：1 / 8
页数：8
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