Phason strains on growth, stability and structure of icosahedral phases

An Pang Tsai, Akihsia Inoue, Tsuyoshi Masumoto

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Growth, stability and structure of icosahedral (i-) phases have been studied by electron diffraction and X-ray diffraction in relation with the phason strains. Three alloy systems; AlPdCr, AlPdMn and AlCuV were chosen in this study. An i-Al72Pd25Cr3 grain has been analysed to have a phason matrix toward to a tetragonal or orthorhombic structure. Stability of the i-phases correlated with the phason relaxation was discussed in Al-Pd-Mn system. A quenched i-Al74Pd17Mn9 close to but containing significant phason strains, revealed that the phason relaxation induced by precipitation of crystalline phases upon annealing. Phason disorder dominated by the chemical composition was evidenced in a composition study in Al-Pd-Mn system. A high density random phasons characterized the icosahedral glass phase was observed in AlCuV alloys.

Original languageEnglish
Pages (from-to)221-236
Number of pages16
JournalProgress in Crystal Growth and Characterization of Materials
Volume34
Issue number1-4
DOIs
Publication statusPublished - 1997 Jan 1

Keywords

  • Icosahedral glass
  • Phason disorder
  • Relaxation

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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