Numerical analysis on Si deoxidation of molten Fe, Ni, Fe-Ni, Fe-Cr, Fe-Cr-Ni, Ni-Cu and Ni-Co alloys by quadratic formalism

Takahiro Miki, Mitsutaka Hino

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Numerical analysis on Si deoxidation of molten Fe, Ni, Fe-Ni, Fe-Cr, Fe-Cr-Ni, Ni-Cu and Ni-Co alloys have been carried out. The excess Gibbs free energy change of mixing has described with Redlich-Kister type polynomial using the relation derived from Darken's quadratic formalism, Excellent agreement between present work and experimental results was found for equilibrium Si and O contents in molten Fe, Ni, Fe-Ni, Fe-Cr, Fe-Cr-Ni, Ni-Cu and Ni-Co alloys. Si deoxidation equilibrium of not only one component metal but also alloys can be analyzed numerically using the formula determined in the present work. Also, interaction parameters of Redlich-Kister type polynomial can be easily converted into interaction coefficients with Taylor's series, which are widely used in steelmaking processes.

Original languageEnglish
Pages (from-to)1848-1855
Number of pages8
JournalIsij International
Volume45
Issue number12
DOIs
Publication statusPublished - 2005 Dec 1

Keywords

  • Excess Gibbs free energy
  • Fe-Cr
  • Fe-Cr-Ni
  • Fe-Ni
  • Ni-Co
  • Ni-Cu
  • Quadratic formalism
  • Redlich-Kister polynomial
  • Si deoxidation equilibrium

ASJC Scopus subject areas

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

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