Temperature Dependence of Hardness and Expansion in an Icosahedral Al-Pd-Mn Alloy

An Pang Tsai, Hiroshi Suenaga, Mamoru Ohmori, Yoshihiko Yokoyama, Akihisa Inoue, Tsuyoshi Masumoto

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53 Citations (Scopus)


Temperature dependence of hardness and expansion in icosahedral Al72Pd20Mn8 alloy (i-AlPdMn) are examined in comparison with a cubic Al60Pd25Mn15 alloy (c-AlPdMn). The hardness at room temperature is about 780 kg/mm2 for i-AlPdMn, much greater than that for c-AlPdMn of 420 kg/mm2, and decreases to about 200 kg/mm2 at 973 K. The thermal expansion of i-AlPdMn is found to be linear versus temperature and the thermal expansion coefficient is estimated to be ∼14.6×10-6 K-1.

Original languageEnglish
Pages (from-to)2530-2531
Number of pages2
JournalJapanese journal of applied physics
Issue number8 R
Publication statusPublished - 1992 Aug
Externally publishedYes


  • Aluminum-palladium-manganese
  • High temperature hardness
  • Icosahedral quasi crytal
  • Thermal expansion

ASJC Scopus subject areas

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


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