Shear band evolution during large plastic deformation of brittle and ductile metallic glasses

被引：8

作者：

Cui, J. W. ^{[1
]}

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

Wu, F. F. ^{[1
,2
]}

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

Shen, B. L. ^{[3
]}

Stoica, M. ^{[4
]}

Eckert, J. ^{[4
,5
]}

机构：

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

[2] Liaoning Univ Technol, Sch Mat & Chem Engn, Jinzhou 121001, Peoples R China

[3] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Zhejiang, Peoples R China

[4] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany

[5] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany

来源：

PHILOSOPHICAL MAGAZINE LETTERS | 2010年 / 90卷 / 08期

基金：

中国国家自然科学基金;

关键词：

metallic glasses; plastic deformation; shear bands; MECHANISMS; FRACTURE; ALLOYS;

D O I：

10.1080/09500839.2010.484399

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Four monolithic metallic glasses (MMGs) with different plasticities varying from brittle to ductile behavior under unconstrained loading were subjected to small punch testing. All specimens undergo large plastic deformation with multiple cobweb-like shear bands under these conditions. The process of shear band evolution was carefully controlled and investigated. Plasticity of MMGs is characterized by equivalent plastic strain epsilon* (product of shear band density and critical shear offset). Thus, this article provides an experimental basis for a better understanding of the shear band evolution during plastic deformation of MMGs.

引用

页码：573 / 579

页数：7

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