Evidence for effect of hydrostatic pressure during casting on glass-forming ability in Zr65Al7.5Ni10Cu17.5-xPdx (x = 0-17.5) alloys

A. D. Setyawan, H. Kato, J. Saida, A. Inoue

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have observed evidence for hydrostatic argon-pressure-dependence of glass-forming ability (GFA) in Zr65Al7.5Ni10Cu17.5-xPdx (numbers indicate at.% x = 0-17.5) alloys. The alloys containing low amount of Pd (x = 0-5) and those with higher Pd (x = 7.5-17.5) showed an opposite tendency in term of the GFA-dependence on pressure. This is supposed to be due to the positive or negative volume changes from the supercooled liquid, to the corresponding primary crystalline/quasicrystalline phase. The result also indicates that the glass-forming ability, in this alloy system may still be improved by controlling the atmosphere condition during casting, despite the previous results (e.g. [A. Inoue, T. Zhang, J. Saida, M. Matsushita, M.W. Chen, T. Sakurai, Mater. Trans. 40 (1999) 1181]) reporting that the substitution of small amount of Cu with noble metals (Pd, Pt, Ag) in Zr-Al-Ni-Cu-based alloys tends to facilitate the nucleation of crystalline or quasicrystalline phase within the glassy one.

Original languageEnglish
Pages (from-to)903-906
Number of pages4
JournalMaterials Science and Engineering A
Volume449-451
DOIs
Publication statusPublished - 2007 Mar 25

Keywords

  • Bulk metallic glasses
  • Glass-forming ability
  • Pressure-dependence
  • Zr-based alloy

ASJC Scopus subject areas

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

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