Effects of Zr Content on the Microstructure and Performance of TiMoNbZrx High-Entropy Alloys

被引：18
作者：
Chen, Gengbiao [1 ]
Xiao, Yi [1 ]
Ji, Xixi [1 ]
Liang, Xiubing [2 ]
Hu, Yongle [1 ]
Cai, Zhihai [3 ]
Liu, Jian [3 ]
Tong, Yonggang [1 ]
机构：
[1] Changsha Univ Sci & Technol, Coll Automobile & Mech Engn, Changsha 410114, Peoples R China
[2] Acad Mil Sci PLA China, Natl Inst Def Technol Innovat, Beijing 100072, Peoples R China
[3] Army Acad Armored Forces, Natl Key Lab Remfg, Beijing 100072, Peoples R China
来源：
METALS | 2021年 / 11卷 / 08期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
high-entropy alloy; microstructure; mechanical properties; processing; MECHANICAL-PROPERTIES; WEAR-RESISTANCE; CR; AL; BEHAVIORS; STABILITY; STRENGTH; DESIGN; MO;
D O I：
10.3390/met11081315
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
TiMoNbZrx refractory high-entropy alloys were prepared by vacuum arc melting, and the influence of the Zr alloying element and its content on the phases, microstructure, mechanical properties, and wear resistance of TiMoNbZrx alloys was explored. It was found that the alloys after Zr addition were composed of a single BCC phase. Upon increasing the Zr content, the grain size of the as-cast alloy decreased first and then increased, and TiMoNbZr0.5 exhibited the smallest grain size. Adding an appropriate amount of Zr increased the strength and hardness of the alloys. TiMoNbZr0.5 exhibited the best wear resistance, with a friction coefficient of about 0.33. It also displayed the widest wear scar, the shallowest depth, and the greatest degree of wear on the grinding ball because of the formation of an oxide film during wear.
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页数：12
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