EUROPEAN CONGRESS AND EXHIBITION ON ADVANCED MATERIALS AND PROCESSES - EUROMAT 2021

A comprehensive experimental and theoretical study of the thermo-physical, thermodynamic, physico-chemical properties of steels and also the modeling of the processes of steelmaking it allow to achieve the top quality of the cast, semi-finished steel product, which is comparable or superior with the quality of world producers of these materials. The paper is focused on the study of phase transformations temperatures in different types of high-alloy steels during its solidification process. The field of the research reflects current world trends in the field of new steel grades, microstructure and mechanical properties of steel, subsurface and surface quality of final products, etc. The realization of highly specialized measurements of thermo-physical properties of steels, respectively the knowledge of phase transformation temperatures (liquidus and solidus temperatures) of steels, is the basic precondition for successfully understanding (manage) the process of cast of steels with the high internal homogeneity. Based on this information, important and significant parameters are specified in the whole technological flow of steelmaking production. Knowledge of those temperatures in combination with utilisation of the method of numerical modeling (setting of boundary condition of numerical simulation of steel solidification process) can then improve the quality of cast steel without any additional treatment.