Issues in Numerical Modeling of Phase Transformations in Welded Joint

This work concerns issues of mathematical modelling of phase transformations in steels during a high-speed high-power heat source welding processes. The analysis of the influence of thermal cycle parameters such as: heating rate, cooling rate and the maximal heating temperature on the kinetics of phase transformations during heating and cooling is performed. The verification of classical mathematical and numerical models of phase transformations is presented in relation to advanced welding methods using a high-speed high-power heat source on the basis of data found in the literature and experimental research.