Reassessing the atomic size effect on glass forming ability: Effect of atomic size difference on thermodynamics and kinetics

Title
Reassessing the atomic size effect on glass forming ability: Effect of atomic size difference on thermodynamics and kinetics
Authors
한형섭박나영서진유남호석석현광김원태김유찬차필령
Keywords
Metallic glasses; Glass forming ability; Atomic packing density; Phase transformation; Phase stability; Molecular dynamics simulation
Issue Date
2016-02
Publisher
Intermetallics
Citation
VOL 69, 123-127
Abstract
Glass forming ability (GFA) for some alloys may be difficult to explain in kinetic point of view alone and the thermodynamics must be considered as an important factor. Herein, investigation of the atomic size effect on the glass forming ability based on the molecular dynamics simulations for binary alloys with Lennard-Jones Embedded Atom Method potentials have been performed. The findings from this study showed that the size effect is accompanied by the change of phase diagram from solid solution to eutectic and change in the local stress/internal energy, which could contributes more to GFA than the kinetic factors such as efficient packing and resulting sluggish atomic transport.
URI
http://pubs.kist.re.kr/handle/201004/50962
ISSN
09669795
Appears in Collections:
KIST Publication > Article
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