Inelastic deformation of metallic glasses under dynamic cyclic loading

Y. J. Duan, J. C. Qiao, T. Wada, H. Kato, Y. J. Wang, E. Pineda, D. Crespo

Research output: Contribution to journalArticlepeer-review

Abstract

Dynamic mechanical analysis was performed in two metallic glasses that show markedly distinct β relaxation features. The confined flow defects of free-volume zones and the inelastic deformation behavior result into a significant mechanical hysteresis loop in dynamic cyclic loadings, which is described with a viscoelastic model. Annealing below the glass transition temperature Tg decreases the concentration of free-volume zones. The understanding of the inelastic deformation, which is related to free-volume zones, is critical and may provide a new avenue into the mechanical properties’ improvement of high entropy metallic glasses.

Original languageEnglish
Article number113675
JournalScripta Materialia
Volume194
DOIs
Publication statusPublished - 2021 Mar 15

Keywords

  • Flow defects
  • Free-volume zones
  • High-entropy metallic glass
  • Inelastic deformation

ASJC Scopus subject areas

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

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