对高纯铝试样进行了冷轧变形和400℃退火,采用电子背散射衍射(EBSD)技术研究了不同晶界组成的微区组织的变化。结果表明,轧制变形时,小角度晶界的界面在相邻晶粒内的滑移线是平直均匀的,大角度晶界的界面在相邻晶粒内的滑移线是弯曲不均匀的。退火后,部分大角度晶界发生迁移并且有的晶界在原来的位置还留下了鬼线,小角度晶界基本没发生迁移。 The high purity aluminum samples were cold rolled and annealed at 400 ℃. The electron microscopic backscatter diffraction (EBSD) technique was used to study the microstructure changes of different grain boundaries. The results show that the slip line in the interface between the small-angle grain boundaries is flat and uniform in the rolling deformation, and the slip line in the interface between the large-angle grain boundaries is unevenly curved of. After annealing, part of the large-angle grain boundaries migrate and some grain boundaries leave a ghost line in the original position, and the small-angle grain boundaries basically do not migrate.