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

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 micro...

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Bibliographic Details
Published in:Journal of materials research 2009, Vol.24 (10), p.3116-3120
Main Authors: Chen, Lian-Yi, Zeng, Yuewu, Cao, Qing-Ping, Park, Byung-Joo, Chen, Yimeng, Hono, Kazuhiro, Vainio, Ulla, Zhang, Zao-Li, Kaiser, Ute, Wang, Xiao-Dong, Jiang, Jian-Zhong
Format: Article
Language:English
Subjects:
Amorphous
Applied and Technical Physics
Biomaterials
Inorganic Chemistry
Materials Engineering
Materials Science
Metal
Microstructure
Nanotechnology
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Summary: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.
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2009.0395