An important factor in improving product quality is the appropriate use of knowledge about crystallization and its mechanisms, which allows the production of materials with optimum microstructure and properties. In the case of metal alloys, the crystallization process is within the temperature range defined by its value for the beginning and the end of crystallisation, i.e., between the liquidus and solidus temperatures, which depend primarily on the chemical composition of the alloy, the cooling rate and the thermodynamic conditions of the transformation. The free energy values for the liquid and solid phase depend on the concentration of the second component. The purpose of this research work is to investigate the thermo-derivative interdependences occurred in the analysed copper alloys using Universal Metallurgical Simulator and Analyzer (UMSA) [2]. In this paper was also investigated the influence of the heat treatment conditions on the structure of titanium copper.