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Nanoscale Structure and Relaxation in Zr50Cu45Al5 Bulk Metallic Glass

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Author(s)
Voyles, P. M.; Stone, D. S.; Kramer, M. J.; Kalay, I.; Kalay, Y. E.; Melgarejo, Z. H.; Hwang, Jinwoo
Citation
Physical Review Letters 108, 195505 (2012)
Date
May 11, 2012
Subject(s)
medium range order; metallic glass; fluctuation electron microscopy
Abstract
Hybrid reverse Monte Carlo simulations of the structure of Zr50Cu45Al5 bulk metallic glass incorporating medium-range structure from fluctuation electron microscopy data and short-range structure from an embedded atom potential produce structures with significant fractions of icosahedral- and crystal-like atomic clusters. Similar clusters group together into nanometer-scale regions, and relaxation transforms crystal-like clusters into icosahedral clusters. A model refined against only the potential does not agree with the fluctuation microscopy data and contains few crystal-like clusters.
Description
http://dx.doi.org/10.1103/PhysRevLett.108.195505
Permanent link
http://digital.library.wisc.edu/1793/63384 
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