Thermodynamic Treatment of Solid/Liquid Equilibrium Distribution Coefficients of Solutes in Multi-component Iron Alloys

概要

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In this work, the thermodynamic treatment of the equilibrium distribution coefficient k^Xo in iron base ternary alloys described in the previous work1, 2) 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 paramete 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 k^Xo 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.
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