Phase separation and improved plasticity by modulated heterogeneity in Cu-(Zr, Hf)-(Gd, Y)-Al metallic glasses

E. S. Park, J. S. Kyeong, D. H. Kim

Research output: Contribution to journalArticle

90 Citations (Scopus)

Abstract

The effect of replacement of Zr/Hf with Gd or Y in Cu46Zr47Al7 and Cu50Hf42.5Al7.5 alloys has been investigated. Phase separation into Cu-Gd-rich (or Cu-Y-rich) and Cu-Zr-rich (or Cu-Hf-rich) amorphous phases occurs during cooling when the Gd (or Y) content is above 15 at.% in Cu-(Zr, Hf)-(Gd, Y)-Al alloys. In particular, it was realized that the plasticity in bulk metallic glass with heterogeneity can be enhanced either by tailoring the combinations of the constituent elements or by controlling the cooling rate.

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalScripta Materialia
Volume57
Issue number1
DOIs
Publication statusPublished - 2007 Jul 1

All Science Journal Classification (ASJC) codes

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

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