Temperature dependent dynamics transition of intermittent plastic flow in a metallic glass. I. Experimental investigations

Z. Y. Liu, G. Wang, Kang Cheung Chan, J. L. Ren, Y. J. Huang, X. L. Bian, X. H. Xu, D. S. Zhang, Y. L. Gao, Q. J. Zhai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

15 Citations (Scopus)

Abstract

Cooling shrinkage can increase the atomic packing density of metallic glasses, which can influence their elastic and plastic behaviour. In the present study, the compressive deformation behaviour of a Zr-based metallic glass at temperatures well below the glassy transition temperature, say 123 K to room temperature, is experimentally revealed. The elastic modulus and the shear modulus at different temperatures are measured to elucidate the yield strength changes with temperature according to the model of shear transformation zones. In the plastic regime, based on the SEM observation and the digital scattering correlation method, an enhanced interaction between the elastic shear strain fields initiated by neighbouring shear bands is discussed, which explains the amplitude of serration events decreasing with the temperature decreasing.
Original languageEnglish
Article number033520
JournalJournal of Applied Physics
Volume114
Issue number3
DOIs
Publication statusPublished - 21 Jul 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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