The features of the processes of cooperation on the crystal − liquid boundary under temperature hypothermia

Abstract

Formulation of the problem. The problem of the behavior of the liquid phase on the crystal − liquid boundary under non-equilibrium crystallization is very important. Recent studies indicate the need to build models allowing for the conditions hypothermia and dissipation processes under non-equilibrium phase transformations. Study the role of temperature hypothermia is a key factor for the selection of the model of  dissipative structures. Presented structural model of liquid layer on the crystal − liquid boundary under non-equilibrium solidification and heat dissipation through the solid phase. The dissipative structures as the convection hexagon cells emerging in the layer according to this model. Different direction of heat flow in the heart cells and the boundaries between them leads to significant temperature hypothermia which is the main mover of the crystallization processes. Conclusions. The proposed model explains the formation of the cell front of crystallization. The frequency of microzones with different hypothermia and their hexagon form determine the shape of the crystallization front, which has cell structure.