Mechanical properties at 2223 K and oxidation behavior of Ir alloys

Yoko Yamabe-Mitarai, Hideyuki Murakami

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Compressive strengths of twelve Ir-1at%X binary alloys were evaluated at 2223 K to understand the strengthening effects of alloying elements. The alloying elements were selected from group 4 to group 10 in the periodic table. The maximum strength of about 65 MPa was obtained in Ir-Hf and Ir-Zr alloys. The effect of adding multiple alloying elements on strength was also investigated. Isothermal oxidation behavior was investigated at 1373 K for Ir alloys including Nb and/or Hf. The weight of all the tested alloys decreased linearly during the oxidation test, indicating that Ir oxide evaporated during oxidation.

Original languageEnglish
Pages (from-to)86-92
Number of pages7
JournalIntermetallics
Volume48
DOIs
Publication statusPublished - 2014 May 1
Externally publishedYes

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Keywords

  • B. Mechanical properties at high temperatures
  • B. Solid-solution hardening
  • F. Metallographic techniques
  • G. Automotive uses

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Chemistry
  • Metals and Alloys
  • Chemistry(all)

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