On the origin of elastic strain limit of bulk metallic glasses

Jun Ding; Y. Q. Cheng; E. Ma

doi:10.1063/1.4861606

On the origin of elastic strain limit of bulk metallic glasses

Jun Ding, Y. Q. Cheng, E. Ma

Chemical Spectroscopy

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

All bulk metallic glasses exhibit a large and almost universal elastic strain limit. Here, we show that the magnitude of the yield strain of the glass state can be quantitatively derived from a characteristic property of the flow state typical in running shear bands (the root cause of yielding). The strain in the shear flow is mostly plastic, but associated with it there is an effective elastic atomic strain. The latter is almost identical for very different model systems in our molecular dynamics simulations, such that the corresponding yield strain is universal at any given homologous temperature.

Original language	English
Article number	011912
Journal	Applied Physics Letters
Volume	104
Issue number	1
DOIs	https://doi.org/10.1063/1.4861606
State	Published - Jan 1 2014

Funding

This work was supported by the US National Science Foundation, Division of Materials Research, under Contract No. NSF-DMR-0904188. Y.Q.C was supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy. This work was supported by the US National Science Foundation, Division of Materials Research, under Contract No. NSF-DMR-0904188. Y.Q.C was supported by the Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy

Funders	Funder number
Office of Basic Energy Sciences
Scientific User Facilities Division
US National Science Foundation
U.S. Department of Energy
Division of Materials Research	NSF-DMR-0904188

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On the origin of elastic strain limit of bulk metallic glasses

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