Creep properties of Ir-based alloy with fcc+ L12 two-phase structure

Y. Yamabe-Mitarai, H. Harada

Research output: Contribution to journalConference articlepeer-review


The creep behavior of the Ir-Nb alloy with cuboidal L12 precipitates in a fee phase and the Ir-Zr alloy with a lamellar structure consisting of the fee and L12 phases was investigated at temperatures between 1773 and 2073 K. The stress exponent and the activation energy of the Ir-based binary alloys were estimated from the creep curves. The deformation mechanism is discussed in terms of the deformation structure observed in transmission electron microscopy, the stress exponent, and the activation energy.

Original languageEnglish
Pages (from-to)1795-1800
Number of pages6
JournalMaterials Science Forum
Issue number3
Publication statusPublished - 2003
Externally publishedYes
EventThermec 2003 Processing and Manufacturing of Advanced Materials - Madrid, Spain
Duration: 2003 Jul 72003 Jul 11


  • Activation energy
  • Compression creep
  • Dislocation structure
  • Ir-Nb
  • Ir-Zr
  • Stress exponent

ASJC Scopus subject areas

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


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