Influence of in-situ nanoprecipitation on constant load deformation in the glass transition region of a Cu60Zr30Ti10 bulk metallic glass

Hidemi Kato, Dmitri V. Louzguine, Akihisa Inoue, Hyoung Seop Kim, Ho Sou Chen

Research output: Contribution to journalArticlepeer-review

Abstract

Nonlinear viscoelasticity influenced by an in situ nanocrystallization under constant load compression at the glass transition temperature, T g, is investigated with a Cu60Zr30Ti 10 (at %) bulk metallic glass (BMG). The experimental curves showed the characteristics, softening and subsequent recovering phenomena which have been observed in a 'stable' Zr-based BMG and also hardening through whole deformation process due to the in situ nanoprecipitation in the glass matrix. These characteristics are fairly reproduced by the fictive stress model extended by the Johnson-Mehl-Avrami (JMA) equation and mixture rule for respectively expressing influences of the Newtonian viscosity and of Young's modulus and critical stress on volume fraction of the nanoprecipitates.

Original languageEnglish
Pages (from-to)2383-2388
Number of pages6
JournalMaterials Transactions
Volume45
Issue number7
DOIs
Publication statusPublished - 2004 Jul

Keywords

  • Bulk metallic glass
  • Fictive stress model
  • In situ nanocrystallization
  • Non-Newtonian flow

ASJC Scopus subject areas

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

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