Propensity of bond exchange as a window into the mechanical properties of metallic glasses

被引：13

作者：

Jiao, W. ^{[1
]}

Wang, X. L. ^{[1
]}

Lan, S. ^{[1
]}

Pan, S. P. ^{[2
]}

Lu, Z. P. ^{[3
]}

机构：

[1] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

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

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

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 06期

关键词：

DEFORMATION;

D O I：

10.1063/1.4908122

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigated the mechanical properties of Zr-Cu-Al bulk metallic glasses, by compression experiment and molecular dynamics simulations. From the simulation, we found that the large, solvent atom, Zr, has high propensity of bond exchange compared to those of the smaller solute atoms. The difference in bond exchange is consistent with the observed disparity in mechanical behaviors: Zr-rich metallic glass exhibits low elastic modulus and large plastic strain. X-ray photoelectron spectroscopy measurements suggest that the increased propensity in bond exchange is related to the softening of Zr bonds with increasing Zr content. (C) 2015 AIP Publishing LLC.

引用

页数：4

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