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Please use this identifier to cite or link to this item: http://apo.ansto.gov.au/dspace/handle/10238/4007

Title: On the Atomic Anisotropy of Thermal Expansion in Bulk Metallic Glass
Authors: Qu, DD
Liss, KD
Yan, K
Reid, M
Almer, JD
Wang, YB
Liao, XZ
Shen, J
Keywords: ALLOYS
Thermal Expansion
Metallic Glasses
X-ray Diffraction
SYNCHROTRONS
ANISOTROPY
Issue Date: 1-Sep-2011
Publisher: WILEY-BLACKWELL
Citation: Qu, D.D., Liss, K.D., Yan, K., Reid, M., Almer, J.D., Wang, Y.B., Liao, X.Z., Shen, J. (2011). On the Atomic Anisotropy of Thermal Expansion in Bulk Metallic Glass. Advanced Engineering Materials, 13(9), 861-864.
Abstract: Glass transition temperature and plastic yield strength are known to be correlated in metallic glasses. We have observed by in situ synchrotron high energy X-ray diffraction anisotropy of the thermal expansion behavior in the nearest neighbor and second nearest neighbor atomic distances in the building blocks of Zr-Cu-Ni-Al based bulk metallic glass, leading inevitably to shear. Mechanical yielding of the latter on the atomic scale leads to the glass transition and the increase of the free volume. These experimental results uncover the mechanism, how glass transition and yield strength are linked. © 2011, Wiley-Blackwell. The definitive version is available at www3.interscience.wiley.com
URI: http://dx.doi.org/10.1002/adem.201000349
http://apo.ansto.gov.au/dspace/handle/10238/4007
ISSN: 1438-1656
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