A new self-consistent model for thermodynamics of binary solutions

The newly developed self-consistent model exploits the trapping concept and calculates the numbers of A-A, A-B and B-B bonds in A-B alloys in dependence of the bond-energy parameter. Consequently the self-consistent model improves the classical regular solution model utilizing the assumption of random distribution of solute atoms. Remarkable differences between both models are demonstrated. The self-consistent model may significantly reduce the number of fitting parameters in the CALPHAD approach as well as experimental efforts.