An overview of the recent progress in grain boundary theory is presented,including the physical concepts of grain boundary model such as CSL,O-Lattice and DSC Lattice.

• 综述了晶界理论的发展概况,包括相符点阵CSL(Coincidence Site Lattice)、O-点阵和DSC(Displacement Shift Completely)点阵等晶界模型的物理概念。