Size-affected shear-band speed in bulk metallic glasses

被引：15

作者：

Liu, Z. Y. ^{[1
]}

Yang, Y. ^{[1
]}

Liu, C. T. ^{[2
]}

机构：

[1] Hong Kong Polytech Univ, Dept Mech Engn, Kowloon, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Ctr Adv Struct Mat, Dept Mech & Biomed Engn, Kowloon, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2011年 / 99卷 / 17期

关键词：

DEFORMATION; COMPRESSION; PLASTICITY; STRAIN; FLOW;

D O I：

10.1063/1.3656016

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we report an important experimental finding and theoretical analysis of the shear-band speed measured in a variety of bulk metallic-glasses. Unlike the prior work, in which the shear-band speed was regarded as a constant, our current study, based on carefully designed loading-holding cyclic tests, reveals that the speed of a shear band correlates with its resultant shear offset. Such a correlation arises as a "size" effect, which could be rationalized with the energy balance principle and shear-banding dynamics entailing initial shear softening and subsequent materials recovery. (C) 2011 American Institute of Physics. [doi:10.1063/1.3656016]

引用

页数：3

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