Thermodynamic treatment of solid/liquid equilibrium distribution coefficients of solutes in multi-component iron alloys.

Abstract

Synopsis In this work, the thermodynamic treatment of the equilibrium distribution coefficient ko in iron base ternary alloys described in the previous work"21 was developed for iron base multi-component alloys and the effects of solute-interactions on the equilibrium distribution coefficient in multi-component iron alloys were discussed thermodynamically. A new parameter for the evaluation of such effects was introduced. Furthermore, the equilibrium distribution coefficients of Cr, Ni, Si, Mn and Mo at various compositions in Fe-Cr-Ni base alloys were measured. Small dependence of ko of those elements on the concentrations of Cr and Ni in those alloys was found and those results were explained by the application of new parameter .