Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence

被引：24
|
作者：
Park, Kyoung-Won [1 ]
Lee, Chang-Myeon [1 ]
Wakeda, Masato [2 ]
Shibutani, Yoji [2 ]
Fleury, Eric [3 ]
Lee, Jae-Chul [1 ]
机构：
[1] Korea Univ, Dept Mat Sci & Engn, Seoul 136701, South Korea
[2] Osaka Univ, Dept Mech Engn, Suita, Osaka 5650871, Japan
[3] Korea Inst Sci & Technol, Adv Met Ctr, Seoul 136701, South Korea
来源：
SCRIPTA MATERIALIA | 2008年 / 59卷 / 07期
关键词：
amorphous alloy; homogeneous deformation; structural disordering; free volume; atomic packing density;
D O I：
10.1016/j.scriptamat.2008.05.033
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
This study demonstrates that preloading via the elastostatic compression of amorphous alloys at room temperature causes permanent deformation, the degree of which was positively correlated with the atomic packing density. This deformation is characterized by homogeneous flow and is proposed to occur as a result of irreversible structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones, causing the creation of free volume. The physics underlying these findings are interpreted from the molecular dynamics viewpoint. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：710 / 713
页数：4
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