Plasticity criterion for bulk amorphous alloys

Seok Woo Lee, Sang Chul Lee, Jae Chul Lee

Research output: Contribution to journalArticle

Abstract

A plasticity criterion (p-parameter), which enables the prediction of the plasticity of monolithic bulk amorphous alloys, is proposed. This criterion, which is defined as |λ - 0.18|ΔTx/Tx, takes into account the local packing state and structural stability characterized by the thermal properties of amorphous alloys. Bulk amorphous alloys with large p-values have more loosely packed and mechanically less stable microstructures, so that local structural evolution including nanocrystallization is promoted during the process of loading, leading to enhanced. The proposed criterion can be used as a means for predicting the plasticity of monolithic bulk amorphous alloys, which are devoid of a minor element with positive mixing enthalpy.

Original languageEnglish
Pages (from-to)344-349
Number of pages6
JournalMaterials Science and Engineering A
Volume477
Issue number1-2
DOIs
Publication statusPublished - 2008 Mar 25

Keywords

  • Bulk amorphous alloy
  • Nanocrystallization
  • Plasticity

ASJC Scopus subject areas

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

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