Crystallization behavior and structural stability of Zr50Cu 40Al10 bulk metallic glass

Shuo Zhang, Tetsu Ichitsubo, Yoshihiko Yokoyama, Tokujiro Yamamoto, Eiichiro Matsubara, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

We have investigated the origin of significantly high thermal stability of Zr50Cu40Al10 metallic glass and its crystallization behavior as compared to Zr70Cu20Al 10 and Zr70Cu30 glassy alloys, by differential scanning calorimetry (DSC), x-ray diffraction (XRD) and resonant ultrasound spectroscopy (RUS) techniques. It was found from XRD and DSC analyses that (i) constituent atoms in Zr50Cu40Al10 are highly close-packed in a glassy state and (ii) Zr50Cu40Al 10 glass shows a complicated crystallization process when it is heated at conventional heating rates, but when it is rapidly heated, the ordered B2-type ZrCu is dominantly formed. The high thermal stability and its crystallization behavior are discussed in terms of the long-range-diffusion of atoms and elastic strain energy.

Original languageEnglish
Pages (from-to)1340-1345
Number of pages6
JournalMaterials Transactions
Volume50
Issue number6
DOIs
Publication statusPublished - 2009 Jun

Keywords

  • Bulk metallic glasses
  • Crystallization
  • Differential scanning calorimetry (DSC)
  • Field-emission scanning electron microscopy (FE-SEM)
  • Long-range-diffusion
  • Rapid heating
  • Strain energy
  • Structure
  • X-ray diffraction method
  • Zirconium-based BMGs

ASJC Scopus subject areas

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

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