Shear avalanches in metallic glasses under nanoindentation: Deformation units and rate dependent strain burst cut-off

X. L. Bian, G. Wang, Kang Cheung Chan, J. L. Ren, Y. L. Gao, Q. J. Zhai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

41 Citations (Scopus)

Abstract

Indented metallic glasses at the nanoscale deform via strain bursts. Conventional continuum descriptions are not appropriate for such highly stochastic, intermittent deformations. In this study, after a statistical analysis of strain bursts in five metallic glasses, the dependence of the cut-off of the strain burst size on deformation units and loading rate is established. For soft metallic glasses with smaller deformation units, cut-off of the strain burst size truncates the scale-free behavior at larger strain burst sizes. For hard metallic glasses, scale-free behavior occurs in a wide range of strain burst sizes.
Original languageEnglish
Article number101907
JournalApplied Physics Letters
Volume103
Issue number10
DOIs
Publication statusPublished - 2 Sep 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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