A new icosahedral Al-Fe-Ta alloy prepared by rapid solidification

Akihisa Inoue, Tsuyoshi Masumoto, An Pang Tsai

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

A new icosahedral phase in the Al-Fe-Ta system has been produced by rapid solidification. The formation of the icosahedral phase is limited in the vicinity of 20%Fe and 10%Ta.The icosahedral phase consists of grains with a size of about 200 nm and each grain includes a highdensity of internal defects showing a contrast of radiating branches. Heating at 10 K/min gives rise to the decomposition of the icosahedral phase into Al3Fe and Al3Ta at about900 K. It is thus concluded that the icosahedral phase has considerably higher thermal stabilitythan Al-Mn and Al-Cr binary icosahedral alloys.

Original languageEnglish
Pages (from-to)L5-L8
JournalJapanese journal of applied physics
Volume27
Issue number1A
DOIs
Publication statusPublished - 1988 Jan

Keywords

  • Electrical resistivity
  • Fivefold symmetry
  • Icosahedral Al-Fe-Ta alloy
  • Quasi-crystal
  • Quenching-in- duced metastable phase
  • Rapid solidification
  • Thermal stability

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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