Abstract Scope |
In casting processes, semi-solid deformation causes serious solidification defects, such as macrosegregation. To control the solidification defects, it is crucial to elucidate the mechanism of semi-solid deformation. Thus, modeling and simulation studies are indispensable for a better understanding of the semi-solid deformation. However, the semi-solid deformation is a significantly complicated multi physics problem that includes solidification, liquid flow, solid motion, solid-solid interaction, among other aspects. In our previous study, we constructed the multi-phase-field lattice Boltzmann (MPF-LB) model, which can simulate the growth of multiple dendrites with motion, liquid flow, collision, and grain growth, to express the formation process of equiaxed solidification structures [Comput. Mater. Sci., 197 (2021) 110658]. In this study, we investigate the two-dimensional semi-solid shear deformation using the MPF-LB model, where several parameters such as the solid fraction, grain size, and grain morphology are systematically changed. |