Crystallization and grain growth behaviour of Zr65Cu27.5Al7.5 metallic glass

J. Saida, M. Matsushita, C. Li, A. Inoue

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The phase transition by crystallization and a grain growth behavior of a Zr65 Cu27.5Al7.5 metallic glass were examined as a function of isothermal annealing time at various temperatures. At the initial stage of crystallization, a metastable Zr(Al,Cu) phase is observed, in addition to a main phase of Zr2Cu, below the annealing temperature of 730 K. The formation of Zr(Al, Cu) may be attributed to the strong chemical affinity between Al and Zr. The grain growth rate for Zr2 Cu is extremely low comparing with that for a Zr65Cu35 binary metallic glass. Therefore, the strong chemical affinity between Al and Zr seems to contribute to the retardation of nucleation and grain growth of the crystalline phases. The grain growth kinetics can be described by log(dD/dtg) = log(k/3) - 2 log D where D is the measured grain size, tg the grain growth time and k the constant. The activation energy Q for grain growth is calculated to be 165 kJ mol-1.

Original languageEnglish
Pages (from-to)338-342
Number of pages5
JournalMaterials Science and Engineering A
Volume304-306
Issue number1-2
DOIs
Publication statusPublished - 2001 May 31
Externally publishedYes

Keywords

  • Grain growth
  • Kinetics
  • Phase transformation
  • Zirconium-based metallic glass

ASJC Scopus subject areas

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

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