Thermodynamic data derived by the CALPHAD method has been extended to undercooled melts to study phase competition and the role of time dependent and steady state nucleation in rapidly solidified materials. The theoretical predictions made about phase competition between hcp α, bcc β and Ll0 γ in some Al(Ti,V) alloys are compared with experimental results. It is shown that high melt cooling rates introduce significant transient nucleation effects on phase nucleation.
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Shao, G., Tsakiropoulos, P. Calculation of Phase Competition and Selection in Solidification Using a Combined Nucleation and Calphad Approach. MRS Online Proceedings Library 398, 45–50 (1995). https://doi.org/10.1557/PROC-398-45