Plastic deformation clusters with high kinetic energy in metallic glass

W. D. Liu, Haihui Ruan, L. C. Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

Although localized atomic rearrangements have been considered to be the underlying mechanism of plastic deformation in metallic glass, the nucleation and evolution of such plasticity events are still elusive. With the aid of molecular dynamics analysis, this study revealed that a series of localized atomic rearrangement events would occur in metallic glass as demonstrated by the formation of high-kinetic-energy clusters. It was found that atomic clusters of average sizes of 1 to 2 nm nucleate during elastic deformation, and become prevailing after yielding. The cores of these clusters contain several high-velocity atoms, which drive the local structural change and accommodate plastic strain. The nucleation and evolution of the local plasticity events are shown clearly by the strong dynamic signature, attributed to the spontaneous structural reshuffling after crossing an energy barrier.
Original languageEnglish
Title of host publicationAdvances in Engineering Plasticity XI
Pages152-155
Number of pages4
DOIs
Publication statusPublished - 8 Feb 2013
Externally publishedYes
Event11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012 - Singapore, Singapore
Duration: 5 Dec 20127 Dec 2012

Publication series

NameKey Engineering Materials
Volume535-536
ISSN (Print)1013-9826

Conference

Conference11th Asia-Pacific Conference on Engineering Plasticity and Its Applications, AEPA 2012
CountrySingapore
CitySingapore
Period5/12/127/12/12

Keywords

  • Localized atomic arrangement
  • MD simulation
  • Metallic glasses

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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