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Shear band multiplication aided by free volume underthree-point bending

Published online by Cambridge University Press:  31 January 2011

Lincai Zhang ,
Feng Jiang ,
Yanglei Zhao ,
Shibin Pan ,
Lin He  and
Jun Sun
Jun Sun
Affiliation:
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
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Abstract

Zr52.5Cu17.9Ni14.6Al10Ti5 bulk metallic glass (BMG) alloy samples in both rod and plate geometry were prepared. Different free volume states were obtained through thermal treatment. The plastic deformation ability of the BMGs was investigated through both a three-point bending test and compression test. The three-point bending results reveal the important role of free volume content on the formation of multiple shear bands, as the shear band propagation can be efficiently stopped due to the existence of the stress gradient from the surface to the neutral plane. In compression, the sample size rather than free volume controls the shear banding behavior.

Keywords

AmorphousDuctility
Type
Articles
Information
Journal of Materials Research , Volume 25 , Issue 2 , February 2010 , pp. 283 - 291
Copyright
Copyright © Materials Research Society 2010

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