Compression properties of B-doped Ir-15Nb two-phase refractory superalloys

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

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The effects of B content on the microstructures and compression properties of the Ir-15at%Nb two-phase refractory superalloy were studied at both room and high temperatures. The yield strengths of the B-doped Ir-15at%Nb alloys were higher than that of the undoped alloy at both room and high temperatures if the B content was around an optimum value, which was about 200 wppm for the Ir-14at%Nb alloy. The fracture mode changed from intergranular fracture in the Ir-15at%Nb alloy to transgranular cleavage in the B-doped alloys. Doping B in the Ir-15at%Nb alloy had little effect on its compression ductility.

Original languageEnglish
Pages (from-to)1079-1083
Number of pages5
JournalScripta Materialia
Issue number10
Publication statusPublished - 1999 Oct 22
Externally publishedYes

ASJC Scopus subject areas

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


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