Structural disordering process of an amorphous alloy driven by the elastostatic compression at room temperature

Sang Chul Lee, Chang Myeon Lee, Jae-chul Lee, Hwi Jun Kim, Yoji Shibutani, Eric Fleury, Michael L. Falk

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Abstract

This study demonstrates that permanent deformation results when an amorphous alloy is subjected to a stress below yield at room temperature. The resultant deformation was observed to be homogeneous and is thought to occur as a result of the structural disordering, in which densely packed short-range ordered clusters break down to form new, loosely packed ones. It was found that this disordering process is irreversible even if the applied stress is removed, resulting in the creation of excess free volume. These findings were analyzed using the molecular dynamics simulations in the light of atomic-scale structural changes.

Original languageEnglish
Article number151906
JournalApplied Physics Letters
Volume92
Issue number15
DOIs
Publication statusPublished - 2008 Apr 24

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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