Tension-Tension Fatigue Behavior of High-Toughness Zr61Ti2Cu25Al12 Bulk Metallic Glass

被引：3
|
作者：
Yang, Yu-Hang [1 ]
Yi, Jun [1 ]
Yang, Na [1 ]
Liang, Wen [1 ]
Huang, Hao-Ran [1 ]
Huang, Bo [1 ]
Jia, Yan-Dong [1 ]
Bian, Xi-Lei [1 ]
Wang, Gang [1 ]
机构：
[1] Shanghai Univ, Inst Mat, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
来源：
MATERIALS | 2021年 / 14卷 / 11期
基金：
中国国家自然科学基金;
关键词：
bulk metallic glass; fatigue; fracture; striation; FRACTURE-TOUGHNESS; ELASTIC PROPERTIES; STRENGTH;
D O I：
10.3390/ma14112815
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：
Bulk metallic glasses have application potential in engineering structures due to their exceptional strength and fracture toughness. Their fatigue resistance is very important for the application as well. We report the tension-tension fatigue damage behavior of a Zr61Ti2Cu25Al12 bulk metallic glass, which has the highest fracture toughness among BMGs. The Zr61Ti2Cu25Al12 glass exhibits a tension-tension fatigue endurance limit of 195 MPa, which is higher than that of high-toughness steels. The fracture morphology of the specimens depends on the applied stress amplitude. We found flocks of shear bands, which were perpendicular to the loading direction, on the surface of the fatigue test specimens with stress amplitude higher than the fatigue limit of the glass. The fatigue cracking of the glass initiated from a shear band in a shear band flock. Our work demonstrated that the Zr61Ti2Cu25Al12 glass is a competitive structural material and shed light on improving the fatigue resistance of bulk metallic glasses.
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收藏
页数：7
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