Enhancing the tribological performance of the TiZrHfCuBe high entropy bulk metallic glass by Sn addition

被引：30
作者：
Du, Yin [1 ]
Zhou, Qing [1 ]
Pei, Xuhui [1 ]
Wang, Hanmin [1 ]
Wang, Haifeng [1 ]
Liu, Weimin [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, Ctr Adv Lubricat & Seal Mat, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China
[2] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2022年 / 171卷
基金：
中国国家自然科学基金;
关键词：
High entropy bulk metallic glass; Tribological behavior; Sn addition; Mechanical properties; Wear mechanism; WEAR; PHASE; FRICTION; ALLOY; FLOW; AG;
D O I：
10.1016/j.triboint.2022.107529
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Inheriting the advantages of bulk metallic glasses (BMGs) and high entropy alloys (HEAs), high entropy bulk metallic glasses (HE-BMGs) have sparked great interest in recent years. In this work, the evolutions of structural heterogeneity, thermal stability and mechanical property of the TiZrHfCuBe HE-BMG with minor Sn addition were characterized, and the corresponding tribological properties under different normal loads and frequencies were investigated. The results showed that minor Sn addition can significantly enhance wear resistance of the HE-BMG by improving its structural heterogeneity and mechanical properties in a rather limited composition range. When excessive Sn is added, plentiful crystal particles are precipitated in the amorphous matrix, and the wear mechanism of the HE-BMG changes from slight abrasive and oxidation wear to severe fatigue and oxidation wear, leading to dramatically declined wear resistance. These findings would provide guidance for the development of advanced HE-BMGs with unique properties.
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页数：13
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