Structural rejuvenation in bulk metallic glasses

Y. Tong, T. Iwashita, W. Dmowski, H. Bei, Y. Yokoyama, T. Egami

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

Using high-energy X-ray diffraction we study structural changes in bulk metallic glasses after uniaxial compressive homogeneous deformation at temperatures slightly below the glass transition. We observe that deformation results in structural disordering corresponding to an increase in the fictive, or effective, temperature. However, the structural disordering saturates after yielding. Examination of the experimental structure and molecular dynamics simulation suggests that local changes in the atomic connectivity network are the main driving force of the structural rejuvenation.

Original languageEnglish
Pages (from-to)240-246
Number of pages7
JournalActa Materialia
Volume86
DOIs
Publication statusPublished - 2015 Mar

Keywords

  • Bulk metallic glasses
  • Creep
  • Rejuvenation
  • Structure
  • X-ray diffraction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

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  • Cite this

    Tong, Y., Iwashita, T., Dmowski, W., Bei, H., Yokoyama, Y., & Egami, T. (2015). Structural rejuvenation in bulk metallic glasses. Acta Materialia, 86, 240-246. https://doi.org/10.1016/j.actamat.2014.12.020