Current Research Status of Micro-Scale Solidification Models of Binary Alloys
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Abstract:
According to determine the non-equilibrium solidification path and local liquid solute concentration in the macro transport model during solidification process of binary alloys, the two kinds of micro-scale solidification models are discussed detailedly, viz. solidification kinetics model and miceosegregation model. The current research status of deterministic solidification kinetics model and semi-analytical microsegregation model are reviewed comprehensively, respectively. The main influencing factors of the two models have also been discussed, viz. undercooling and nucleation rate & back-diffusion and coarsening. Further more, the practical value in the coupled numerical simulation of alloy solidification and the future developmental directions of the micro-scale solidification models are elaborated.
