The tribological properties of Al0.6CoCrFeNi high-entropy alloy with the σ phase precipitation at elevated temperature

被引：153
作者：
Chen, Ming [1 ]
Lan, Liwei [1 ]
Shi, Xiaohui [1 ]
Yang, Huijun [1 ]
Zhang, Min [1 ]
Qiao, Junwei [1 ]
机构：
[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Shanxi, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2019年 / 777卷
关键词：
Metals and alloys; Rapid-solidification; Microstructure; Oxidation; Scanning electron microscopy; SEM; X-ray diffraction; WEAR BEHAVIOR; MECHANICAL-PROPERTIES; MICROSTRUCTURE; AL; COATINGS; STABILITY; OXIDATION;
D O I：
10.1016/j.jallcom.2018.10.393
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The microstructure, hot hardness and oxidation behavior of Al0.6CoCrFeNi high-entropy alloy were investigated. Moreover, the effect of the temperature on the tribological properties of Al0.6CoCrFeNi high-entropy alloy was studied. The results showed that the sigma-CrFe phase was precipitated after heat treatment. The hardness of HEAs increased from 278 to 480 HV. The HEAs possessed higher wear resistance than that of the conventional alloys at elevated temperatures. The wear resistance of annealed alloy was nearly 3 times higher than that of GCr15 steel at 600 degrees C. With increasing temperature, the predominant wear mechanism was transformed from the abrasive wear to the mild oxidative wear as well as delamination wear with increasing the temperature. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：180 / 189
页数：10
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