Inhomogeneous deformation in metallic glasses

R. Huang, Z. Suo, J. H. Prevost, W. D. Nix

Research output: Contribution to journalArticle

179 Scopus citations

Abstract

The present study provides a theoretical framework for the inhomogeneous deformation in metallic glasses. The free volume concentration is adopted as the order parameter, which is a function of position and time. The three processes that can change the local free volume concentration are diffusion, annihilation, and stress-driven creation. The rate functions for free volume generation and plastic flow depend on the underlying microscopic model, but the framework is generally valid for different models. A simple shear problem is solved as an example. A linear stability analysis is performed on the basis of the homogeneous solution. An inhomogeneous solution is obtained with a finite amplitude disturbance to the initial free volume distribution. Numerical simulation shows the development of the inhomogeneous deformation and strain localization.

Original languageEnglish (US)
Pages (from-to)1011-1027
Number of pages17
JournalJournal of the Mechanics and Physics of Solids
Volume50
Issue number5
DOIs
StatePublished - May 2002

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Free volume
  • Inhomogeneous deformation
  • Localization
  • Metallic glasses

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