Formation of 2-5 nm size pre-precipitates of cF96 phase in a Hf-Co-Al glassy alloy

D. V. Louzguine, H. Kato, H. S. Kim, A. Inoue

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The devitrification behaviour of Hf55Co25Al 20 glassy alloy was studied by X-ray diffractometry, transmission electron microscopy, differential scanning and isothermal calorimetry. Formation of a nanoscale structure with a pre-precipitate of the cF96 Ti 2Ni-type phase embedded in the residual glassy matrix was observed upon annealing. We obtained an Avrami exponent value of 2.6, indicating that the primary pre-precipitates are formed by steady state nucleation and diffusion-controlled growth of nuclei.

Original languageEnglish
Pages (from-to)198-201
Number of pages4
JournalJournal of Alloys and Compounds
Volume359
Issue number1-2
DOIs
Publication statusPublished - 2003 Sep 22

Keywords

  • Amorphous materials
  • Melt spinning
  • TEM
  • Thermal analysis
  • Transition metal alloys

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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