Plasticity of amorphous alloys: 2. Inhomogeneous deformation

Kyoung W. Park, Chang Myeon Lee, Jae-chul Lee

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Studies of a number of Cu-Zr amorphous alloys have demonstrated that those exhibiting greater plastic strain during homogeneous deformation at room temperature show lower global plasticity associated with inhomogeneous deformation in a typical compression test. Using a combination of experiments and molecular dynamics simulations, we clarify this seeming paradox between the homogeneous and inhomogeneous deformation by exploring the microstructural aspects in view of the structural disordering, disorder-induced softening, and shear localization and relate these findings to the global plasticity of bulk amorphous alloys. Additional analyses were conducted to derive a simple structural parameter that allows the prediction of the global plasticity of bulk amorphous alloys.

Original languageEnglish
Pages (from-to)773-785
Number of pages13
JournalJournal of Korean Institute of Metals and Materials
Volume47
Issue number11
Publication statusPublished - 2009 Dec 1

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Keywords

  • Amorphous alloy
  • Free volume
  • Inhomogeneous deformation
  • Plasticity
  • Shear localization

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Modelling and Simulation

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