Why do large-angle grain boundaries account for more after recrystallization?

The strength and deformation of the material increase.

The deformation degree is less than the critical deformation degree, and only the multilateralization process occurs during annealing, and the original grain boundary only needs to move a short distance to eliminate the strain inhomogeneity. When the deformation degree reaches the critical deformation degree, the deformation inhomogeneity of individual parts is large, and its driving force is enough to cause large-scale movement and recrystallization of grain boundaries. However, because the nucleation rate is small and the ratio of the nucleation rate to the crystal nucleus growth rate is also small, coarse grains are obtained. After that, with the increase of deformation degree, the ratio of nucleation rate to crystal nucleus growth rate increases continuously, and the recrystallized grains are refined continuously.