Unified Criterion for Temperature-Induced and Strain-Driven Glass Transitions in Metallic Glass

H. B. Yu, Ranko Richert, R. Maaß, K. Samwer

Research output: Contribution to journalArticle

26 Scopus citations

Abstract

In a model metallic glass, we study the relaxation dynamics in both the linear and the nonlinear response regimes by numerical simulations of dynamical mechanical spectroscopy and analyze the atomic displacement statistics. We find that the primary (α) relaxation always takes place when the most probable atomic displacement reaches a critical fraction (∼20%) of the average interatomic distance, irrespective of whether the relaxation is induced by temperature (linear response) or by mechanical strain (nonlinear response). Such a unified scenario, analogous to the well-known Lindemann criterion for crystal melting, provides insight into the structural origin of the strain-induced glass-liquid transition.

Original languageEnglish (US)
Article number135701
JournalPhysical Review Letters
Volume115
Issue number3
DOIs
StatePublished - Sep 25 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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