Effect of manipulating atomic scale heterogeneity on plasticity in Mg-based bulk metallic glasses

E. S. Park, D. H. Kim

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This paper investigates the effect of manipulating atomic scale heterogeneity on plasticity in Mg-based bulk metallic glasses (BMGs). First, we show that tailoring combinations of bonding energy among constituent elements in Mg-based BMGs results in local structural and/or chemical heterogeneity, which can influence the formation and propagation of the shear bands during deformation. Secondly, we show that by controlling cooling rate during vitrification, it is possible to modulate heterogeneity and thereby influence the viscous flow in supercooled liquid region, which is closely related to mechanical properties in BMGs. These findings suggest that optimization of heterogeneity by controlling the cooling rate as well as tailoring combinations of constituent elements could enhance plasticity in various BMGs.

Original languageEnglish
Pages (from-to)1867-1871
Number of pages5
JournalIntermetallics
Volume18
Issue number10
DOIs
Publication statusPublished - 2010 Oct 1

Fingerprint

Metallic glass
Plasticity
Cooling
Vitrification
Shear bands
Viscous flow
Mechanical properties
Liquids

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

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Effect of manipulating atomic scale heterogeneity on plasticity in Mg-based bulk metallic glasses. / Park, E. S.; Kim, D. H.

In: Intermetallics, Vol. 18, No. 10, 01.10.2010, p. 1867-1871.

Research output: Contribution to journalArticle

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