Plasticity of ductile metallic glasses: a self-organized critical state.

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Output type: Journal article

Author list: Sun, Yu, Jiao, Bai, Zhao, Wang

Publisher: American Physical Society

Publication year: 2010

Volume number: 105

Issue number: 3

ISSN: 0031-9007

eISSN: 1079-7114

Languages: English-Great Britain (EN-GB)

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Open access status: closed

Abstract

We report a close correlation between the dynamic behavior of serrated flow and the plasticity in metallic glasses (MGs) and show that the plastic deformation of ductile MGs can evolve into a self-organized critical state characterized by the power-law distribution of shear avalanches. A stick-slip model considering the interaction of multiple shear bands is presented to reveal complex scale-free intermittent shear-band motions in ductile MGs and quantitatively reproduce the experimental observations. Our studies have implications for understanding the precise plastic deformation mechanism of MGs.

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