Vogel-Fulcher-Tammann plot for viscosity scaled with temperature interval between actual and ideal glass transitions for metallic glasses in liquid and supercooled liquid states

A. Takeuchi, H. Kato, A. Inoue

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)

Abstract

The glass transition temperature- (Tg-) scaled Arrhenius plot (Angell plot) has been modified by considering viscosity (η) of metallic glasses in a liquid and supercooled liquid state with absolute temperature (T). The logη-(Tg/T) relationships in Angell plot were modified as logη-[(Tg-T0)/(T-T0)] relationships where T0 is the ideal glass transition temperature from Vogel-Fulcher-Tammann (VFT) parameters. Introducing ΔTg-0 (≡Tg-T0) makes it possible to regard the modified plot as ΔTg-0-scaled VFT plot. Using B from VFT parameters provides a relationship D*VFT = B/ΔTg-0 ∼38, in which Tg was principally measured at a heating rate of 0.333 K s-1. The analyses revealed that ΔTg-0-scaled VFT plot reflects α relaxation due to a motion of groups of atoms, and that ΔTg-0/(Tl-T0) where Tl is the liquidus temperature can be a glass-forming parameter.

Original languageEnglish
Pages (from-to)406-411
Number of pages6
JournalIntermetallics
Volume18
Issue number4
DOIs
Publication statusPublished - 2010 Apr 1

Keywords

  • B. Glasses, metallic
  • B. Thermal properties
  • B. Thermal stability
  • C. Rapid solidification processing
  • E. Physical properties, miscellaneous

ASJC Scopus subject areas

  • Chemistry(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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