An investigation of the phase diagram of the Al-Ir binary system

Machiko Ode, Taichi Abe, Hideyuki Murakami, Yoko Yamabe-Mitarai, Toru Hara, Kosuke Nagashio, Cenk Kocer, Hidehiro Onodera

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Al-rich portion of the Ir-Al phase diagram has been investigated with 10 alloys by means of differential thermal analysis, X-ray diffraction, scanning electron microscopy, inductivity coupled plasma spectrometry and electron probe microanalysis. Invariant reactions are observed: L ↔ AlIr + Al2.7Ir, L + Al2.7Ir ↔ Al3Ir, L + Al3Ir ↔ Al13Ir4, L + Al13Ir4 ↔ Al9Ir2. Although the eutectic reaction, L ↔ AlIr + Al2.7Ir, cannot be regarded as definitely established by previous research, it is confirmed in the present research. Liquidus curve has been determined for the first time for Al-rich alloy (Ir ≤ 33.0 at%). The Ir-Al binary phase diagram has been modified based on these experimental observations.

Original languageEnglish
Pages (from-to)1171-1178
Number of pages8
JournalIntermetallics
Volume16
Issue number10
DOIs
Publication statusPublished - 2008 Oct 1
Externally publishedYes

Keywords

  • A. Aluminides, miscellaneous
  • B. Phase diagrams
  • B. Phase identification
  • D. Microstructure
  • F. Calorimetry

ASJC Scopus subject areas

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

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  • Cite this

    Ode, M., Abe, T., Murakami, H., Yamabe-Mitarai, Y., Hara, T., Nagashio, K., Kocer, C., & Onodera, H. (2008). An investigation of the phase diagram of the Al-Ir binary system. Intermetallics, 16(10), 1171-1178. https://doi.org/10.1016/j.intermet.2008.06.020