Thermodynamic stability of intermetallic compounds in technical aluminum

For the following systems Al-Ti, Al-Ni, Al-Zr, Al-Cr, Al-Fe, Al-V the wide range of intermetallic compounds based on aluminum was considered. Thermodynamic parameters such as Gibbs energy and formation enthalpy characterizing the properties of resulting intermetallic compounds were calculated. The relations of these two characteristics versus temperature were established in a wide range. On the basis of the obtained relations the comparative assessment of the compound stability for each binary system was carried out. The level of each intermetallic compound stability was revealed on the ground of the affinity with aluminum. The possibilities of practical application of obtained data for actual metallurgical tasks were defi ned.