Nanoscale Structure and Structural Relaxation in Zr50Cu45Al5 Bulk Metallic Glass

Date

2012-05-11

Author

HWANG, Jinwoo
MELGAREJO, Z. H.
Kalay, Yunus Eren
KALAY, I.
KRAMER, M. J.
STONE, D. S.
VOYLES, P. M.

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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.

Subject Keywords

Medium-range order, Monte-carlo algorithm, Fluctuation microscopy, Forming liquids, Atomic packing, Transition, Model, Probe

URI

https://hdl.handle.net/11511/34827

Collections

Department of Metallurgical and Materials Engineering, Article