Effect of precipitate morphology on strength of Ir-Nb alloys with two-phase coherent structures

Y. Yamabe-Mitarai, Yuefeng Gu, Y. Ro, S. Nakazawa, T. Maruko, H. Harada

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

The precipitate morphology of Ir-Nb alloys is altered by heat treatment. When Cuboidal precipitates were localized in rows along the 〈001〉 cube directions, the strength was lower than that of samples with cuboidal precipitates distributed uniformly, because of large, wide fcc channels. When plate-like or needle-like fcc phases were formed in cuboidal L12 precipitates, there was no large difference in the strength from that of samples with uniformly distributed cuboidal precipitates. This shows that Ir-Nb alloys deform by the bypass mechanism.

Original languageEnglish
Pages (from-to)305-311
Number of pages7
JournalScripta Materialia
Volume41
Issue number3
DOIs
Publication statusPublished - 1999 Jul 9
Externally publishedYes

ASJC Scopus subject areas

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

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