Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 718, Issue -, Pages 254-259Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2017.05.124
Keywords
Metallic glass; High energy X-ray diffraction; Volume shrinkage; Atomic structural evolution
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Funding
- National Key Basic Research Program from MOST [2015CB856800]
- NSFC [51671120, 51501106]
- China Postdoctoral Science Foundation [2016M601563]
- Natural Science Foundation of Shanghai [17ZR1440800]
- DFG Leibniz Program [EC 111/26-1]
- European Research Council under the ERC Advanced Grant INTELHYB [ERC-2013-ADG-340025]
- 111 project
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The temperature-dependent atomic structural evolution of a Zr64.13Cu15.75Ni10.12Al10 metallic glass is studied by in-situ high-energy X-ray diffraction in the temperature range of 79-553 K. The interatomic distance in the first nearest neighbor shell increases with decreasing temperature, while the interatomic distance in other atomic shells decreases. This decrease in the interatomic distances causes volume shrinkage and an increase in the strength of the metallic glass. The volume shrinkage can be quantitatively described by the Varshni function. The structural information is helpful for deeply understanding of the origin of the rejuvenation of metallic glasses at the cryogenic temperatures. (C) 2017 Elsevier B.V. All rights reserved.
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