STUDY OF CHANGES IN THE STRUCTURE OF STEELS DURING THERMOMECHANICAL TREATMENT

Summary: Thermomechanical processing is a combination of the operations of deformation by heating and cooling (in different sequences), as a result of which the formation of the final structure of a metal alloy, and consequently its properties, occurs under conditions of increased density and the corresponding distribution of structural imperfections created by plastic deformation. Therefore, firstly, research in the field of thermomechanical processing is reduced to studying the effect of plastic deformation on transformations in heat-treated alloys and on the structure in properties after these transformations. Secondly, thermomechanical processing is advisable in all cases where heat treatment of metal alloys is effective. Phase transitions during heat treatment and plastic flow occur as a result of the restructuring of the same atoms, connected not only by general regular structures, but also by certain, also to a certain extent regular, deviations from these structures, the main ones of which are dislocations.