An assessment of Ir-Pt-Al alloys for high-temperature materials

Y. Yamabe-Mitarai, H. Aoki

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

To design high-temperature materials with suitable ductility and high strength at high temperatures, Ir-Pt-Al alloys were investigated. It is expected that precipitation hardening by the B2 phase and solid-solution hardening of Ir by Pt and Al occur in the Ir-Pt-Al alloys. The phase constitution and microstructure were investigated by X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and electron probe microscopy analysis (EPMA). Compression creep tests were then carried out with some of these alloys at 1773 K under 30 MPa. The creep mechanism is discussed in terms of the microstructure and phase constituents. Finally, the potential of Ir-Pt-Al alloys as high-temperature materials is discussed.

Original languageEnglish
Pages (from-to)143-152
Number of pages10
JournalJournal of Alloys and Compounds
Volume359
Issue number1-2
DOIs
Publication statusPublished - 2003 Sep 22

Keywords

  • High temperature alloys
  • Metals
  • SEM
  • TEM
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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