Equilibrium between Ti and O in molten Fe-Ni, Fe-Cr and Fe-Cr-Ni alloys equilibrated with 'Ti3O5' solid solution

Seong Ho Seok, Takahiro Miki, Mitsutaka Hino

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

The Ti deoxidation equilibrium of Fe-Ni, Fe-Cr and Fe-Cr-Ni alloys saturated with 'Ti3O5' and Ti2O3 phase was clarified in previous researches. Solubility of Fe, Cr and/or Ni oxides in 'Ti3O5' phase equilibrated with liquid Fe-Ni, Fe-Cr and Fe-Cr-Ni alloys at 1823 K to 1923 K were measured by SEM-EDS. It was confirmed that the solubility of Fe, Cr and/or Ni oxide in 'Ti3O 5' phase at low Ti content increase with decrease of Ti content in alloys. Titanium content that dissolution of Fe, Cr and/or Ni oxide into 'Ti3O5' phase becomes apparent increases with increase of Cr and/or Ni content of the alloys. The activity of Ti deoxidation product, 'Ti3O5' phase, equilibrated with Fe-Ni, Fe-Cr and Fe-Cr-Ni alloys was also evaluated by Redlich-Kister type polynomial. Equilibrium between Ti and O at low Ti content of those alloys was analyzed using the activity of 'Ti3O5' phase.

Original languageEnglish
Pages (from-to)566-572
Number of pages7
JournalIsij International
Volume51
Issue number4
DOIs
Publication statusPublished - 2011

Keywords

  • Fe-Cr alloy
  • Fe-Cr-Ni alloy
  • Fe-Ni alloy
  • Redlich-Kister polynomial
  • SEM EDS analysis
  • Thermodynamics
  • Ti deoxidation equilibrium

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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