The influence of glass transition temperature on the critical size for deformation mode transition in metallic glassy films

被引：17
作者：
Cao, Q. P. [1 ,2 ]
Wang, C. [1 ,2 ]
Bu, K. J. [1 ,2 ]
Liu, S. Y. [1 ,2 ]
Wang, X. D. [1 ,2 ]
Zhang, D. X. [3 ]
Jiang, J. Z. [1 ,2 ]
机构：
[1] Zhejiang Univ, ICNSM, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Lab New Struct Mat, Dept Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[3] Zhejiang Univ, State Key Lab Modern Opt Instrumentat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
SCRIPTA MATERIALIA | 2014年 / 77卷
基金：
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词：
Metallic glassy film; Deformation mode transition; Glass transition temperature; Poisson's ratio; Size effect; COMPRESSION; DUCTILITY; ALLOYS;
D O I：
10.1016/j.scriptamat.2014.01.025
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The size effect on the bending deformation behaviour of magnetron-sputtered La57Al25Co18, Cu50Zr50 and Fe70Y8B22 glassy films was investigated. The transition of the deformation mode from highly localized to non-localized occurs as the film thickness reduces below the critical value, which does not exhibit a distinct dependence on Poisson's ratio. By combining the already-reported critical size for deformation mode transition in various metallic glasses, it is found that the critical size is primarily proportional to the homologous temperature. (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：64 / 67
页数：4
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