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Enhance plasticity of bulk metallic glasses by geometric confinement

Published online by Cambridge University Press:  31 January 2011

P. Yu ,
Y.H. Liu ,
G. Wang ,
H.Y. Bai  and
W.H. Wang
P. Yu
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
Y.H. Liu
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
G. Wang
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
H.Y. Bai*
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
W.H. Wang
Affiliation:
Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

We report that bulk metallic glasses (BMGs) with large plasticity can be obtained in conventional brittle BMGs by a shrink-fit metal sleeve. The mechanical performance especially the plasticity in the Zr41.2Ti13.8Cu12.5Ni10Be22.5 BMG with a shrink-fit copper sleeve is much enhanced. The approach results in the formation of the highly dense and frequent interacting and arresting events of shear bands and is the origin of the observed large global plasticity. The results present another simple step toward toughening the inherently brittle BMGs.

Keywords

AlloyAmorphousStress/strain relationship
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 9 , September 2007 , pp. 2384 - 2388
Copyright
Copyright © Materials Research Society 2007

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References

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