Ti deoxidation equilibrium in molten Fe-Ni alloys at temperatures between 1 823 to 1 923 K

Seong Ho Seok, Takahiro Miki, Mitsutaka Hino

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Equilibrium relation between Ti and O in molten Fe-Ni alloy has been investigated at 1 873 to 1 923 K. Ti oxide equilibrated with molten Fe-Ni alloy has been determined by EBSD (Electron Backscatter Diffraction) pattern analysis using FE-SEM (Field Emission Scanning Electron Microscope). The present results have been numerically analyzed by the excess Gibbs free energy change of mixing for the Fe-Ni-Ti-O system with Redlich-Kister type polynomial. Redlich-Kister type polynomial parameters concerning Ni and Ti were determined as follows, 0ΩNi-Ti=424 280-270.407 J/mol (XTi<0. 003, 1 823 K≤7≤1 923 K),1ΩNi-Ti=-663 380+313.15T" J/mol (XTi<0.003, 1 823 K≤7≤1 923 K).

Original languageEnglish
Pages (from-to)804-808
Number of pages5
JournalIsij International
Volume49
Issue number6
DOIs
Publication statusPublished - 2009

Keywords

  • FE-SEM EBSD analysis
  • Fe-Ni alloy
  • Redlich-Kister polynomial
  • Thermodynamics
  • Ti deoxidation equilibrium

ASJC Scopus subject areas

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

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