Abstract:
The evolution of texture, Taylor factor and disorientation of high carbon steel wire rod during cold drawing was characterized using electron backscatter diffraction. The texture evolution was interpreted in terms of variation of Taylor factor and the mechanism of the evolution was discussed. Meanwhile, the evolution of correlated and uncorrelated distribution of disorientation was preliminarily studied. The results show that with the increase of drawing strain, the relative content of grains with Taylor factor greater than 3 increased, indicating that the 〈110〉-fiber texture changed from the 〈113〉-fiber texture during the successive drawing. Meanwhile, the pearlite colonies were evidently deformed, resulting in the amount of low angle grain boundary increasing. The uncorrelated distribution of disorientation coincided with Mackenzie distribution under relatively small strains, while peaks appeared both at 20° and 50° in the uncorrelated disorientation distribution map under relatively large strains, showing the dislocation multiplication and transformation trend from low angle grain boundaries to high angle grain boundaries.