Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process

Chang Myeon Lee, Sang Chul Lee, Seung Yong Shin, Nack J. Kim, Jae Chul Lee

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This study examined the fundamental issue of whether an elastic shear stress imposed on an amorphous alloy causes structural changes during the process of quasistatic loading. A shear-deforming device that can deliver elastic shear stress to the workpieces was designed to investigate the effect of excess free volume generated by elastic shear stress on the mechanical properties of bulk amorphous alloys. With repeated application of elastic shear stress, the plasticity of the shear-deformed amorphous alloys increased, while the yield strength decreased. These behaviors were analyzed from the perspective of the structural changes associated with the viscoelastic nature of amorphous alloys.

Original languageEnglish
Pages (from-to)400-404
Number of pages5
JournalMaterials Science and Engineering A
Volume487
Issue number1-2
DOIs
Publication statusPublished - 2008 Jul 25

Keywords

  • Bulk amorphous alloy
  • ECAP
  • Free volume
  • Plasticity

ASJC Scopus subject areas

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

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