Creep behavior of Ni-added Ir85Nb15 two-phase refractory superalloys at 1800 °C

Y. F. Gu, Y. Yamabe-Mitarai, S. Nakazawa, H. Harada

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The compression creep properties for the nickel (Ni) added iridium-based two-phase refractory superalloys were investigated at 1800°centigrade under 137 MPa. Samples were examined using scanning electron microscope and transmission electron microscope. Creep strain was determined by a CCD camera and by measuring the load-strain displacement. Results indicated that creep resistance improved due to addition of 1 at.% Ni due to lattice misfit decrease and change in crack behavior.

Original languageEnglish
Pages (from-to)137-142
Number of pages6
JournalScripta Materialia
Volume46
Issue number2
DOIs
Publication statusPublished - 2002 Jan
Externally publishedYes

Keywords

  • Creep
  • IrNb
  • Refractory superalloy
  • Ultra-high temperature

ASJC Scopus subject areas

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

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