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Homogeneity of the superplastic Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass

Published online by Cambridge University Press:  31 January 2011

Lian-Yi Chen ,
Yuewu Zeng ,
Qing-Ping Cao ,
Byung-Joo Park ,
Yimeng Chen ,
Kazuhiro Hono ,
Ulla Vainio ,
Zao-Li Zhang ,
Ute Kaiser  and
Xiao-Dong Wang
...Show all authors
Qing-Ping Cao
Affiliation:
International Center for New-Structured Materials, Zhejiang University and Laboratory of New-Structured Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Kazuhiro Hono
Affiliation:
National Institute for Materials Science, Tsukuba 305-0047, Japan
Ulla Vainio
Affiliation:
HASYLAB at DESY, Hamburg D-22607, Germany
Ute Kaiser
Affiliation:
Electron Microscopy Group of Materials Science, Ulm University, Ulm D-89069, Germany
Jian-Zhong Jiang*
Affiliation:
International Center for New-Structured Materials, Zhejiang University and Laboratory of New-Structured Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
*
a) Address all correspondence to this author. e-mail: jiangjz@zju.edu.cn
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Abstract

A recent report on the “room temperature superplasticity” in the Zr64.13Cu15.75Ni10.12Al10 bulk metallic glass [Y.H. Liu et al., Science315, 1385 (2007)] was ascribed to the distinctive micrometer-sized structural heterogeneity. To verify the microstructure in this alloy, transmission electron microscopy (TEM) and anomalous small-angle x-ray scattering experiments were conducted. The results show that no micrometer-sized or nanometer-sized structural heterogeneities can be found. The micrometer-sized dark and bright regions that were previously reported as the reason for the plasticity are artifacts caused by TEM specimen preparation, rather than the intrinsic structure feature of this alloy. This finding is important for further studying the unique properties of this alloy.

Keywords

AmorphousMetalMicrostructure
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 10 , October 2009 , pp. 3116 - 3120
Copyright
Copyright © Materials Research Society 2009

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