High-temperature strength of Ir-based refractory superalloys

Yoko Yamabe-Mitarai

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


Ir-based refractory superalloys with an fcc and L12 two-phase structure similar to that in Ni-based superalloys but with considerably higher melting temperatures are proposed. First, the microstructure and strength are shown for several kinds of binary alloys. Then, the effect that the third element and the combination of NJ-Al with an fcc and L12 two-phase structure in binary alloys had on the lattice misfit, microstructure, and strength was investigated. The precipitation-hardening effect in Ir-based alloys was investigated and discussed in terms of precipitate morphology and lattice misfit. The creep properties of Ir-based alloys were also investigated.

Original languageEnglish
JournalMaterials Research Society Symposium - Proceedings
Publication statusPublished - 2001 Dec 1
Externally publishedYes
EventHigh Temperature Ordered Intermetallic Alloys IX - Boston, MA, United States
Duration: 2000 Nov 272000 Nov 29

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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