Multi-step shear banding for bulk metallic glasses at ambient and cryogenic temperatures

被引：53

作者：

Qiao, J. W. ^{[1
,2
]}

Jia, H. L. ^{[3
]}

Zhang, Y. ^{[2
]}

Law, P. K. ^{[3
]}

Li, L. F. ^{[4
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[3] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[4] Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Cryogen, Beijing 100190, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2012年 / 136卷 / 01期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

Amorphous materials; Mechanical test; Deformation; Fracture; FLOW; BEHAVIOR; FRACTURE; ALLOYS;

D O I：

10.1016/j.matchemphys.2012.06.033

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Analysis of energy dissipation during shear-banding aids to understand plastic deformations of bulk metallic glasses (BMGs). For Zr55Al10Ni5Cu30 BMGs at 298 K. multi-step shearing is proposed, and the thermal energy during serrations cannot result in a temperature rise (Delta T) higher than T-m. At 77 K, N-step shearing is supposed. When N is in the range of 24-47, it is reasonable to deduce the resulting temperature from 0.8T(g) to T-m, accompanied by a continuous plastic deformation. Crown Copyright (C) 2012 Published by Elsevier B.V. All rights reserved.

引用

页码：75 / 79

页数：5

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