利用SEM、TEM研究了单晶铝与多晶铜的形变显微组织特征并测定了形变显微组织中不同亚结构间的取向差 .结果表明 :形变单晶铝及多晶铜其原始晶粒发生位错分割而形成三类不同尺寸的亚结构 ,即形变带、胞块及位错胞 ;形变带由相互间隔的基体带和过渡带组成 ,形变造成的晶体转动主要集中在过渡带内 ,基体带由胞块及位错胞组成 . The deformation microstructure characteristics of single crystal aluminum and polycrystalline copper were studied by SEM and TEM, and the difference in orientation between different sub-structures in the deformed microstructure was determined.The results show that the original crystal grains Three types of sub-structures of different sizes are formed, ie, deformation bands, cell blocks and dislocation cells. The deformation bands are composed of matrix bands and transition bands separated from each other. The crystal rotation caused by deformation mainly concentrates in the transition band, Base band by the cell blocks and dislocation cells.