Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence
Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence
复制标题
DOI：
10.1016/j.scriptamat.2008.05.033
复制
发表时间：
2008-10
影响因子：
6
通讯作者：
K. Park;C. Lee;M. Wakeda;Y. Shibutani;E. Fleury;Jae-Chul Lee
中科院分区：
文献类型：
--
作者：
K. Park;C. Lee;M. Wakeda;Y. Shibutani;E. Fleury;Jae-Chul Lee
这项研究表明，通过在室温下的非晶合金的弹性压缩预加载引起永久变形，其程度与原子堆积密度呈正相关。这种变形的特征是均匀流动，并且被认为是由于不可逆转的结构无序而发生的，其中密集排列的短程有序团簇分解形成新的、松散排列的团簇，导致自由体积的产生。从分子动力学的观点解释这些发现的物理基础。
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.