Internal state modulation-mediated plasticity enhancement in monolithic Ti-based bulk metallic glass

被引：23
|
作者：
Park, J. M. [1 ,2 ]
Kim, D. H. [2 ]
Eckert, J. [1 ,3 ]
机构：
[1] IFW Dresden, Inst Complex Mat, D-01171 Dresden, Germany
[2] Yonsei Univ, Dept Met Engn, Ctr Noncrystalline Mat, Seoul 120749, South Korea
[3] Tech Univ Dresden, Inst Mat Sci, D-01062 Dresden, Germany
来源：
INTERMETALLICS | 2012年 / 29卷
关键词：
Metallic glasses; Rolling; Microstructure; TRANSMISSION ELECTRON-MICROSCOPY; MECHANICAL-PROPERTIES; ROOM-TEMPERATURE; SHEAR BANDS; AMORPHOUS-ALLOYS; POISSONS RATIO; TENSILE DUCTILITY; DEFORMATION; STRESS; COMPOSITES;
D O I：
10.1016/j.intermet.2012.05.003
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effect of strain-induced internal state modulation created by cold rolling on the plastic deformation of Ti40Zr25Ni8Cu9Be18 bulk metallic glass was investigated. The pre-plastic deformation is very effective for improving the room temperature compressive plasticity, i.e., the plastic strain is remarkably enhanced up to similar to 14.5%. The origin of the improved room temperature plasticity is related to the introduction of a strain-mediated heterogeneous microstructure composed of shear softened regions and surrounding undeformed hard regions, providing rather uniform plastic flow. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：70 / 74
页数：5
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