Phase equilibria between the B2, L12, and fcc phases in the Ir-Ni-Al system

Y. Yamabe-Mitarai*, T. Aoyagi, K. Nishida, H. Aoki, T. Abe, H. Murakami

*この研究の対応する著者

研究成果: Article査読

9 被引用数 (Scopus)

抄録

The isotherms of the Ir-Ni-Al in the composition range up to 50 at% Al are presented at 1573 K. The phase constitution and microstructure of the Ir-Ni-Al alloys were examined using X-ray diffractometry (XRD), scanning electron microscopy (SEM) with an electron probe microanalyzer (EPMA), and transmission electron microscopy (TEM) after heat treatment at 1573 K for 168 h. The B2-NiAl and B2-IrAl phases connected with each other at 1573 K. The highest solubility limit of Ir into Ni3Al was about 3.5 at% in the tested alloys. Then, a wide fcc + B2 and a narrow fcc + L12 and B2 + L12 two-phase region appeared in the isothermal section. In part of the B2 phase, a martensitic transformation from the B2 to the L10 phase was observed.

本文言語English
ページ(範囲)479-488
ページ数10
ジャーナルIntermetallics
15
4
DOI
出版ステータスPublished - 2007 4
外部発表はい

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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