Plasticity criterion for bulk amorphous alloys

Seok W. 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

Fingerprint

Amorphous alloys
plastic properties
Plasticity
Nanocrystallization
structural stability
Enthalpy
Thermodynamic properties
thermodynamic properties
enthalpy
microstructure
Microstructure
predictions

Keywords

  • Bulk amorphous alloy
  • Nanocrystallization
  • Plasticity

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Plasticity criterion for bulk amorphous alloys. / Lee, Seok W.; Lee, Sang Chul; Lee, Jae-chul.

In: Materials Science and Engineering A, Vol. 477, No. 1-2, 25.03.2008, p. 344-349.

Research output: Contribution to journalArticle

Lee, Seok W. ; Lee, Sang Chul ; Lee, Jae-chul. / Plasticity criterion for bulk amorphous alloys. In: Materials Science and Engineering A. 2008 ; Vol. 477, No. 1-2. pp. 344-349.
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