Quasicrystals in Al-Pd-TM (TM=Transition Metal) Systems Prepared by Rapid Solidification

An Pang Tsai, Yoshihiko Yokoyama, Tsuyoshi Masumoto, Akihisa Inoue

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

An icosahedral phase with a face-centered six-dimensional hypercubic lattice (F-type) and a decagonal phase were found to be formed in rapidly solidified Al-Pd-TM (TM=V, Cr, Mn, Fe, Co, Mo, Ru, Re or Os) and Al-Pd-Co alloys, respectively. The formation of the mostly single quasicrystalline phases is limited to the narrow compositional ranges with e/a between 1.6 and 1.8. Neither the simple cubic (P-type) icosahedral nor amorphous phase was found in the Al-Pd-TM system. Thus, the effect of the group number of TM on the rapidly solidified structure in the Al-Pd-TM alloys is significantly different from that for Al-Cu-TM alloys. On the basis of the thermodynamic data, it is presumed that the strong chemical bonding nature among the constituent elements in the Al-Pd-TM alloys prevents the formation of P-type icosahedral and amorphous phases.

Original languageEnglish
Pages (from-to)L1161-L1164
JournalJapanese journal of applied physics
Volume29
Issue number7
DOIs
Publication statusPublished - 1990 Jul

Keywords

  • Aluminum-palladium base quasicrystal
  • Decagonal phase
  • Face-centered six-dimensional hypercubic lattice
  • Group number
  • Icosahedral phase
  • Outer electron concentration
  • Rapid solidification

ASJC Scopus subject areas

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

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