Fracture and strength of a TiZr-based metallic glass at low temperatures

被引：7

作者：

Wu, S. J. ^{[1
,2
]}

Qu, R. T. ^{[1
,2
]}

Wang, X. D. ^{[1
]}

Zhu, Z. W. ^{[3
]}

Zhang, H. F. ^{[3
]}

Zhang, Z. F. ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China

[2] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 768卷

基金：

中国国家自然科学基金;

关键词：

Metallic glass; Low temperature; Strength; Failure criterion; Shear fracture; MECHANICAL-BEHAVIOR; SHEAR; DEFORMATION; PLASTICITY; TRANSITION; FAILURE; FLOW;

D O I：

10.1016/j.msea.2019.138453

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

With decreasing the testing temperature, a TiZr-based metallic glass (MG) shows obvious increments in yield strengths, tension-compression strength asymmetry, and deviations of shear-fracture-angle, implying that the MG displays increased resistance to plastic shearing but decreased critical stress for brittle normal fracture. These results well explain the ductile-to-brittle transition of MGs caused by low temperature. Besides, the low-temperature failure criterion was established and applied to various other MGs. It is demonstrated that the MGs with lower Poisson's ratio may be more sensitive to suffer low-temperature induced brittle fracture.

引用

页数：7

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