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Characterization of rate-dependent shear behavior of Zr-based bulk metallic glass using shear-punch testing

Published online by Cambridge University Press:  01 January 2006

L.F. Liu ,
L.H. Dai ,
Y.L. Bai ,
B.C. Wei  and
J. Eckert
L.F. Liu
Affiliation:
State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Science, Beijing 100080, People's Republic of China
L.H. Dai*
Affiliation:
State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Science, Beijing 100080, People's Republic of China
Y.L. Bai
Affiliation:
State Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of Science, Beijing 100080, People's Republic of China
B.C. Wei
Affiliation:
National Laboratory of Microgravity, Institute of Mechanics, Chinese Academy of Science, Beijing 100080, People's Republic of China
J. Eckert
Affiliation:
Department of Materials and Geo Sciences, Physical Metallurgy Division, Darmstadt University of Technology, D-64287 Darmstadt, Germany
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

In this study, the rate-dependent mechanical behavior of a Zr41.2Ti13.8Cu12.5Ni10Be22.5 bulk metallic glass was studied using quasi-static and dynamic shear-punch testing at room temperature. The results demonstrate that the shear strength of this alloy is insensitive to the applied strain rate. However, the formation of shear bands and the serrated flow exhibits a significant strain rate effect. The shear banding-induced fracture patterns and the fracture-melting phenomenon were analyzed based on the free volume theory and the energy transfer model.

Keywords

Metallic glassMechanical propertiesStress/strain relationship
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 1 , January 2006 , pp. 153 - 160
Copyright
Copyright © Materials Research Society 2006

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