Abstract Scope |
During metal casting, semi-solid materials deform under external forces, leading to solidification defects. In particular, external shear forces induce shear band formation through grain contact and rearrangement, directly affecting the formation of segregation band, thus accurate prediction and control of this phenomenon are desired. In this study, we developed the evaluation method for semi-solid simple shear deformation using the multi-phase-field lattice Boltzmann model to clarify where and how shear band is formed. Through the simulations with this method, we examined the effects of solid fraction, deformation rate, and grain morphology, which significantly impact shear band formation. The simulations also offered detailed insights into the size, position, and formation mechanism of shear band. |