Crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses

Xinquan Guo, Dmitri Louzguine, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

It was found that the Ti45-xZrxNi45-zCuz (0 ≤ x ≤ 10, 0 ≤ z ≤ 10) metallic glasses crystallize polymorphously and the crystal phase forms a solid solution of Zr and Cu in the TiNi phase. Differential scanning calorimetry (DSC) was used to study the crystallization kinetics of Ti-Zr-Ni-Cu metallic glasses near glass transition temperature. The fraction transformed y, as a function of time are of sigmoidal type at each temperature. For 0.10 ≤ y ≤ 0.85 the plots satisfy the Johnson-Mehl-Avrami equation and approximate to straight lines with exponent n varying from 3.1 to 3.9 as the annealing temperature increases. The activation energy for the crystallization of Ti45Zr5Ni45Cu5 metallic glass estimated from the temperature corresponding to 50% transformation is close to 380 kJ/mol.

Original languageEnglish
Pages (from-to)2406-2409
Number of pages4
JournalMaterials Transactions
Volume42
Issue number11
DOIs
Publication statusPublished - 2001 Nov

Keywords

  • Activation energy
  • Amorphous alloy
  • Differential scanning calorimetry
  • Isothermal crystallization kinetics
  • Titanium-zirconium-nickel-copper metallic glass

ASJC Scopus subject areas

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

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