Equilibrium phases at the Ir-rich corner of the Ir-Nb-Ni-Al quaternary system

C. Huang, K. Nishida, Y. Yamabe-Mitarai, H. Harada

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


The equilibrium phases of three Ir-Nb-Ni-Al quaternary alloys at the Ir-rich corner were investigated in some detail. The phases were determined by X-ray profile as well as microstructure observation. Three phases of fcc/L12-Ir3Nb/B2-IrAl were found in two samples, and four phases of fcc/L12-Ir3Nb/L12-Ni3Al/B2-IrAl were characterized in one sample. The electron probe microanalysis (EPMA) technique was applied for analyzing the phase composition of this quaternary system. A partial quaternary phase diagram at the Ir-rich side was plotted according to the EPMA results.

Original languageEnglish
Pages (from-to)893-902
Number of pages10
Issue number9
Publication statusPublished - 2002 Sep 1
Externally publishedYes


  • A. Intermetallics, miscellaneous
  • B. Alloy design
  • B. Phase diagram
  • B. Phase identification

ASJC Scopus subject areas

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


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