Direct structural evidence for dynamic heterogeneity in supercooled liquid bulk metallic glass

M. Matsuura, T. Fujita, K. Konno, W. Zhang, M. W. Chen

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

In situ measurements of the X-ray absorption fine structure for the supercooled liquid state of Au 65Cu 10.5Si 17Ag 7.5 bulk metallic glass, which exhibits extraordinarily low T g and a stable supercooled liquid state, were performed. Analyses of data combined with molecular dynamics simulation suggest that the glass transition is caused by the breakdown of Cu-Cu bonding which connects Cu-centered icosahedral clusters. Cu atoms play a key role in the enhancement of glass formability and the low T g of the Au 65Cu 10.5Si 17Ag 7.5 bulk metallic glass.

Original languageEnglish
Pages (from-to)927-930
Number of pages4
JournalScripta Materialia
Volume66
Issue number11
DOIs
Publication statusPublished - 2012 Jun

Keywords

  • Bulk metallic glass
  • Dynamic heterogeneity
  • Glass transition
  • Super cooled liquid
  • X-ray absorption fine structure

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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