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

Fingerprint

Amorphous alloys
plastic properties
shear stress
Plasticity
Shear stress
shear
Free volume
yield strength
Yield stress
mechanical properties
Mechanical properties
causes

Keywords

  • Bulk amorphous alloy
  • ECAP
  • Free volume
  • Plasticity

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process. / Lee, Chang Myeon; Lee, Sang Chul; Shin, Seung Yong; Kim, Nack J.; Lee, Jae-chul.

In: Materials Science and Engineering A, Vol. 487, No. 1-2, 25.07.2008, p. 400-404.

Research output: Contribution to journalArticle

Lee, Chang Myeon ; Lee, Sang Chul ; Shin, Seung Yong ; Kim, Nack J. ; Lee, Jae-chul. / Improvement of the plasticity of bulk amorphous alloys via a low-angle shear-deforming process. In: Materials Science and Engineering A. 2008 ; Vol. 487, No. 1-2. pp. 400-404.
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