Qualitative and Quantitative Calculation of the Phase Composition of the Al-Fe-Si-Zr System

The calculation and optimization of the composition was carried out using the Thermo- Calc software product. The Thermo-Calc program generates state diagrams based on the dependence of chemical potentials on temperature. In the TTAL5 thermodynamic database of the Thermo-Calc program, the calculation of the effect of alloying elements contained in a solid solution of Al for alloys of the selected chemical composition was carried out. Taking into account the mixing energy, the minimum equation of free energy for all phases is solved. Here it is possible to obtain a suitable phase composition by forming the Al-Fe-Si-Zr phase in the concentration range of iron and Silicon 0.3-0.5% and 0.1-0.3%. Based on the calculated data, the validity of the calculated data regarding the use of scrap aluminum products as the main raw material for smelting heat-resistant conductive alloys of high strength has a positive effect on the economic component of the production process.