Effects of step size and cut-off limit of residual liquid amount on solidification simulation of Al-Mg-Zn system with Scheil model

The effects of the step size and the cut-off limit of the residual liquid amount on the solidification simulation with Scheil model have been analyzed. A non-zero cut-off limit may terminate the solidification simulation with a larger simulation step size before a eutectic reaction is reached. Although a larger temperature step size can increase the simulation efficiency, it could significantly reduce the accuracy of the simulation modeling such as the amounts of solidified phases. Al-Mg-Zn ternary system is taken as an example to demonstrate the effects.