The effect of Ti addition on phase equilibria among Ni (Al), Ni 3Al (L12) and Ni3v (D022) phases

Eiki Hayashi, Satoru Kobayashi, Kazuhisa Sato, Toyohiko J. Konno, Yasuyuki Kaneno, Takayuki Takasugi

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3 Citations (Scopus)

Abstract

The effect of Ti addition on phase equilibria among Ni (Al), Ni 3Al (L12) and Ni3V (D022) phases at 950°C was investigated by means of TEM/EDS analysis on heat-treated alloys. The three-phase coexisting region of Al +L12+D022 was found to exist around the composition of Ni-4A1-19V (at.%) in the Ni-Al-V ternary system. By addition of Ti into the ternary system the three-phase coexisting region was shifted to the Ni rich side. Ti partitioned most into the L12 phase and least into the Al phase. These results suggest that the addition of Ti stabilizes the L12 phase against D022 and Al phases.

Original languageEnglish
Pages (from-to)386-391
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume96
Issue number6
DOIs
Publication statusPublished - 2010

Keywords

  • Alloying effect
  • Eutectoid reaction temperature
  • Intermetallic alloys
  • Phase stability

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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