Homogeneous deformation of bulk amorphous alloys during elastostatic compression and its packing density dependence

Kyoung Won Park, Chang Myeon Lee, Masato Wakeda, Yoji Shibutani, Eric Fleury, Jae-chul Lee

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This study demonstrates that preloading via the elastostatic compression of amorphous alloys at room temperature causes permanent deformation, the degree of which was positively correlated with the atomic packing density. This deformation is characterized by homogeneous flow and is proposed to occur as a result of irreversible structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones, causing the creation of free volume. The physics underlying these findings are interpreted from the molecular dynamics viewpoint.

Original languageEnglish
Pages (from-to)710-713
Number of pages4
JournalScripta Materialia
Volume59
Issue number7
DOIs
Publication statusPublished - 2008 Oct 1

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Keywords

  • Amorphous alloy
  • Atomic packing density
  • Free volume
  • Homogeneous deformation
  • Structural disordering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Metals and Alloys

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