Atom probe microanalysis of Ir-bearing Ni-based superalloys

H. Murakami*, Y. Koizumi, T. Yokokawa, Y. Yamabe-Mitarai, T. Yamagata, H. Harada

*この研究の対応する著者

研究成果: Article査読

38 被引用数 (Scopus)

抄録

The effects of Ir addition on the microstructural characteristics of Ni-based single crystal superalloys have been investigated using atom probe field ion microscopy (APFIM) and the results were compared with numerical estimations obtained from the Monte Carlo simulations (MCS) and the cluster variation method (CVM). The alloy investigated was TMS-79 (Ni-12.6 at% Al-7.7 at% Cr-4.6 at% Mo-2.7 at% Ta-1.8 at% Ir). APFIM analysis revealed that Ir atoms have a slight preference to partition into the γ-phase and to substitute for the Al site in the γ′ precipitates, which showed agreement with numerical estimations by CVM and MCS. The possible effect of Ir additions on the mechanical properties is briefly discussed.

本文言語English
ページ(範囲)109-114
ページ数6
ジャーナルMaterials Science and Engineering A
250
1
DOI
出版ステータスPublished - 1998 7 15
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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