Glass-forming ability and mechanical properties of the ternary Cu-Zr-Al and quaternary Cu-Zr-Al-Ag bulk metallic glasses

Qingsheng Zhang, Wei Zhang, Guoqiang Xie, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

The effects of addition of Al and equivalent atomic ratio of Ag and Al on the glass-forming ability (GFA) of the Cu50Zr50 alloy are investigated. It is found that the alloy with the highest GFA is the Cu 46Zr46Al8 alloy in ternary (Cu 50Zr50)100-xAlx, alloys, and the critical diameter is at least 8 mm. The simultaneous addition of Ag and Al is more effective to increase the glass-forming ability of the binary Cu 50Zr50 alloy. The critical diameter of a glassy rod is 12 mm for the Cu42Zr42Al8Ag8 alloy. High stabilization of the supercooled liquid is the reason for high GFA of the Cu46Zr46Al8 and Cu42Zr 42Al8Ag8 alloys. Both glassy alloys exhibited high fracture strength above 1960MPa, but no distinct plastic strain is seen. There is no evident difference in the mechanical properties of the as-cast Cu42Zr42Al8Ag8 glassy rods with different diameters.

Original languageEnglish
Pages (from-to)1626-1630
Number of pages5
JournalMaterials Transactions
Volume48
Issue number7
DOIs
Publication statusPublished - 2007 Jul
Externally publishedYes

Keywords

  • Bulk metallic glasses
  • Copper-zirconium-based alloys
  • Glass-forming ability
  • Thermal stability

ASJC Scopus subject areas

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

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