Experimental study on the effect of normal stress on the shear banding in a Zr-based bulk metallic glasses

被引:0
作者
Liu, Longfei [1 ]
Hu, Jing [1 ]
Li, Huiqiang [1 ]
Zhang, Guangye [1 ]
机构
[1] Hunan Univ Sci & Technol, Hunan Prov Key Lab Hlth Maintenance Mech Equipmen, Xiangtan 411201, Hunan, Peoples R China
来源
ADVANCES IN SUPERALLOYS, PTS 1 AND 2 | 2011年 / 146-147卷
关键词
normal stress; shear band; bulk metallic glasses; plasticity; DEFORMATION; BEHAVIOR;
D O I
10.4028/www.scientific.net/AMR.146-147.424
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A special fixture, which can control the ratio(lambda) of normal stress/shear stress, was used to study the effect of normal stress on the shear banding behaviors in a Zr-based bulk metallic glasses in the present paper. The experimental results demonstrated that the plastic displacement increased with increasing of lambda. Observations of shear bands pattern on the sample surfaces indicated that normal stress have significant impact on the inclined angle, numerical density and length of shear bands. In addition, normal stress is the major factor of inducing multiple shear bands with intersecting, branching and slipping. Based on the observations, the mechanism of plasticity enhancement due to the increasing of normal stress was explored.
引用
收藏
页码:424 / 428
页数:5
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