The size-dependent non-localized deformation in a metallic alloy

被引：53
|
作者：
Zhong, C. [1 ,2 ]
Zhang, H. [1 ,2 ,3 ]
Cao, Q. P. [1 ,2 ]
Wang, X. D. [1 ,2 ]
Zhang, D. X. [4 ]
Jiang, J. Z. [1 ,2 ]
机构：
[1] Zhejiang Univ, Int Ctr New Struct Mat, Lab New Struct Mat, State Key Lab Silicon Mat, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[3] Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 2V4, Canada
[4] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
SCRIPTA MATERIALIA | 2015年 / 101卷
基金：
中国国家自然科学基金;
关键词：
Metallic glass; Molecular dynamic simulation; Tensile behavior; Size effect; MOLECULAR-DYNAMICS; ENHANCED PLASTICITY; GLASS NANOPILLARS; TENSILE DUCTILITY; AMORPHOUS-ALLOYS; COMPRESSION; STRENGTH; BEHAVIOR; STATE; MODE;
D O I：
10.1016/j.scriptamat.2015.01.015
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The tensile behaviors of Cu50Zr50 metallic glass (MG) films with the same cooling history as a function of film thickness are systematically studied by molecular dynamics simulations. It clearly reveals that with decreasing film thickness, a transition from the localized deformation to the non-localized deformation indeed occurs in Cu50Zr50 MG films, which might be a general phenomenon for all MGs. The thickness-dependent deformation mode change observed here, is then reasonably explained by the Griffith crack-propagation criterion. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：48 / 51
页数：4
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