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Atomic-scale simulations of strain localization in a single-component three-dimensional model amorphous solid

Published online by Cambridge University Press:  26 February 2011

Yunfeng Shi  and
Michael L Falk
Yunfeng Shi
Affiliation:
yunfengs@umich.edu
Michael L Falk
Affiliation:
mfalk@umich.edu
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Abstract

Molecular dynamics is used to simulate model non-crystalline solids described by a single-component Dzugutov system. The solids are produced by quenching equilibrium liquids at different cooling rates. These are then tested in uniaxial compression. Samples produced at high cooling rates exhibit homogenous deformation while samples quenched at low cooling rates exhibit localized deformation. Shear bands are shown to correspond to regions of depleted short-range order as determined by a Frank-Kasper criterion.

Keywords

amorphousstructuralnanostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 903: Symposium Z – Amorphous and Nanocrystalline Metals for Structural Applications , 2005 , 0903-Z16-05
Copyright
Copyright © Materials Research Society 2006

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