Two-zone heterogeneous structure within shear bands of a bulk metallic glass

被引：52

作者：

Shao, Yang ^{[1
]}

Yao, Kefu ^{[1
]}

Li, Mo ^{[1
,2
]}

Liu, Xue ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

APPLIED PHYSICS LETTERS | 2013年 / 103卷 / 17期

基金：

美国国家科学基金会;

关键词：

DEFORMATION; FLOW;

D O I：

10.1063/1.4826117

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Shear bands, the main plastic strain carrier in metallic glasses, are severely deformed regions often considered as disordered and featureless. Here we report the observations of a sandwich-like heterogeneous structure inside shear bands in Pd40.5Ni40.5P19 metallic glass sample after plastic deformation by high-resolution transmission electron microscopy. The experimental results suggest a two-step plastic deformation mechanism with corresponding microstructure evolution at atomic scale, which may intimately connected to the stability of the shear band propagation and the overall plastic deformability. (C) 2013 AIP Publishing LLC.

引用

页数：4

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