Effects of Solute-interaction on the Equilibrium Distribution of Solute between Solid and Liquid Phases in Iron Base Ternary System

Abstract

In order to describe the effects of solute-interactions on the equilibrium distributions of solute elements between solid and liquid phases in iron base ternary system, Distribution Interaction Coefficient (DIC), k^j_i, was defined in this work. The coefficient k^j_i is shown as the ratio of the equilibrium distribution coefficient of solute i in Fe-i-j ternary system to that in Fe-i binary one and this is considered to be the parameter indicating the change of the equilibrium distribution coefficient of solute i with the additon of the alloying element j. The influences of solute-interaction on the equilibrium distributions of some solutes in Fe-C, Fe-N, Fe-H, Fe-P and Fe-S base ternary systems could be discussed by the use of the coefficient DIC.