MODELING OF CRYSTALLIZATION OF IRON-CARBON MELTS WITH ALLOYING ADDITIVES OF Al, V, Ti TAKING INTO ACCOUNT CHEMICAL REACTIONS

A physical model of cooling and crystallization for simulating solidification of multicomponent iron melts taking into account chemical reactions between the components and software have been developed. The model is based on the theory of a quasi-equilibrium two-phase zone. The law of conservation of mass is fully satisfied. The model uses a parameter that takes into account the diffusion coefficient of carbon in the solid phase, the distance between the second-order dendritic axes and the local solidification time. The chemical interactions during crystallization in the Fe-C-N-Al-V-Ti system have been simulated and it has been shown that taking into account chemical reactions and diffusion of components in the solid phase has a significant effect.