Modeling of stress-strain curves for Pd40Ni10Cu30P20 glass alloy under constant strain-rate deformation

Hidemi Kato, Yoshihito Kawamura, Akihisa Inoue, Ho Sou Chen

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

A model which is based on the hypothesis of stress-induced structural relaxation and the concepts of fictive stress for viscoelastic deformation of glass materials around the glass transition temperature is proposed. It expresses both linear and non-linear viscoelastic behaviors. For constant strain-rate deformation, it performs the stress-overshoot phenomenon observed in the condition of non-Newtonian flow. The model calculation reproduces fairly well the experimental results of Pd40Ni10Cu30P20 glass alloy, in particular, the development of stress-overshoot with increasing strain-rate and lowering temperature. Moreover, this model performs oscillatory behavior (stress-overshoot and -undershoot) which has been observed in many polymer solutions and glass alloy recently observed in stress-strain curves.

Original languageEnglish
Pages (from-to)758-762
Number of pages5
JournalMaterials Science and Engineering A
Volume304-306
Issue number1-2
DOIs
Publication statusPublished - 2001 May 31

Keywords

  • Fictive stress
  • Modeling
  • Non-Newtonian flow
  • Stress-overshoot
  • Viscoelastisity

ASJC Scopus subject areas

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

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