Calculation of solidification paths for multicomponent systems

Publisher Summary This chapter presents the calculation of solidification paths for multi-component systems. The chapter illustrates the isothermal section of the Al–Mg–Si system at 580 °C. There are no ternary inter-metallic compounds in the Al–Mg–Si system. The eutectic temperature corresponding to the four-phase equilibrium between Si, Al, Mg2Si and the liquid phase is 553°C. The intersection of the lines of the solidification paths with the monovariant line are on either sides of the maximum. The thermodynamic data used in the calculations are those existing in the Scientific Group Thermodata Europe (SGTE) Database. This chapter illustrates the examples that have been calculated using Thermo-Calc, which is a computer software for the phase diagram and complex equilibrium calculations.