In situ phase separation and flow behavior in the glass transition region

Dmitri V. Louzguine-Luzgin, Takeshi Wada, Hidemi Kato, John Perepezko, Akihisa Inoue

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

The temperature dependence of length change and viscous flow of the Cu36Zr48Al8Ag8 glassy alloy is examined in both the glass transition and supercooled liquid regions. Moreover, this alloy is found to exhibit phase separation rather by binodal mechanism in the glassy phase prior to crystallization. There is an apparent decrease in viscosity observed upon crystallization that is connected with the densification of the sample, but the intrinsic viscosity does not rise significantly until the initial crystallization process is almost complete. During the process the partly crystallized supercooled liquid still behaves like a fluid until a large fraction of the crystalline phase (∼90%) is formed. This new insight on flow behavior opens up possibilities for innovative processing of precise bulk shapes with high nanocrystal densities.

Original languageEnglish
Pages (from-to)1235-1239
Number of pages5
JournalIntermetallics
Volume18
Issue number6
DOIs
Publication statusPublished - 2010 Jun

Keywords

  • A. Bulk metallic glass
  • B. Viscosity
  • F. Transmission electron microscopy (TEM)
  • F. X-ray diffraction (XRD)

ASJC Scopus subject areas

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

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