Thermal diffusivity of Zr-based bulk glass alloys in the liquid state

Hiroyuki Shibata, Shunsuke Nishihata, Hiromichi Ohta, Shigeru Suzuki, Yoshio Waseda, Muneyuki Imafuku, Junichi Saida, Akihisa Inoue

Research output: Contribution to journalArticle

Abstract

Thermal diffusivity of three alloys of Zr55Al 10Ni5Cu30, Zr60Al 15Ni25 and Zr65Al7.5Cu 27.5 has been measured in the liquid state with a laser flash technique. The thermal diffusivity values of three Zr-based alloys in the liquid state are summarized in the linear equations with positive temperature dependency. The lower the thermal diffusivity values of Zr-based alloys at liquidus temperature, the lower the critical cooling rate to produce metallic glass phase becomes. The measured thermal diffusivity was compared with the value for Pd-based metallic glass. The results indicate that critical cooling rate to obtain metallic glass phase could be an increasing function of thermal diffusivity for each alloy system.

Original languageEnglish
Pages (from-to)886-888
Number of pages3
JournalMaterials Transactions
Volume48
Issue number4
DOIs
Publication statusPublished - 2007 Apr 1

Keywords

  • Glass forming ability
  • Laser flash
  • Metallic glass
  • Thermal diffusivity
  • Zirconium-based alloy

ASJC Scopus subject areas

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

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