ABOUT CONNECTION OF LIQUACTION WITH THE DEBYE TEMPERATURE

The article describes the concept of liquation. Within the framework of the research, the definition of the concept described is given. The types of liquation (zonal and dendritic) are given. It is established that a number of parameters characterizing the segregation process are related to the characteristic Debye temperature of a chemical element. The interrelation between the values of the effective atomic radius, intensity, and also the liquation coefficient from the Debye temperature is considered. The role of the values of the maximum supercooling parameter on the Debye temperature is described. The dependence of the content of elements in interdendritic volumes on the Debye temperature is considered. The dependence of the chemical composition of local regions on the Debye temperature is given. A similar trend was observed with the values of the viscosity of the molten metal. The correlation coefficients always exceeded 0.9.
It should be noted that the liquation process adversely affects the steel properties. This can affect the values of the toughness of transverse specimens. The considered dependences of the process parameters can be useful for describing the processes of eliminating the heterogeneity of steels. All this will not only improve its properties, but also describe in more detail the process of eliminating the chemical heterogeneity of steel. In addition, this will allow us considering the melting process with a change in volume. Increased interest causes the content of elements in the axes of the dendrites in the initial cast state. It was found that the distribution of elements in the axes of dendrites in interdendritic microvolumes in the structure of the pressed steel does not depend on the quenching method. For the dependence considered, the values of the correlation coefficient are calculated. The main conditions of the quenching process as well as the content of the elements in percent are given.