使用ＥＢＳＤ（电子背散射衍射）手段对ＩＦ钢在罩式退火过程中织构的变化进行了研究。研究结果表明：冷变形纤维是由尺寸小于２ μｍ 的亚晶组成，亚晶之间具有空间取向差，｛００１｝变形晶粒中亚晶的取向差很小，而｛１１１｝变形纤维中亚晶的取向差通常较大，这导致｛１１１｝冷变形基体上首先发生形核和长大，而｛００１｝取向纤维最后被吞并；随着再结晶的进行，晶粒之间的取向差呈小角度关系的比例下降，这是因为具有相近取向的亚晶数量随着再结晶的进行而减少的缘故。 EBSD (electron backscatter diffraction) was used to study the change of texture of IF steel during the annealing process. The results show that the cold-deformed fibers consist of sub-crystallites less than 2 μm in size, with poor spatial orientation between subgrains and small subgrains orientation in the {001} deformed grains, while the deformation of the {111} The orientation difference of the grains is usually large, which leads to nucleation and growth of {111} cold deformed matrix, and the {001} oriented fibers are finally swallowed. With the recrystallization, the difference in orientation between the grains The proportion of small angle relationships decreases because the number of subgrains with similar orientations decreases with recrystallization.