Influence of Initial Crystal Orientation and Carbon Content on Rolling Texture in 3 mass % Si steel

Influence of the initial crystal orientation and carbon content on rolling texture was investigated using quasi-single crystals in 3.2 mass% Si steel. These specimens had {110}< 001 > and {110}< 113 > crystal orientation which were known for the near surface texture of the hot-rolled band. In the case of the ultra low-carbon specimens, initial {110}< 001 > rotated to {111}< 112 > after 66 % reduction cold rolling and initial {110}< 113 > rotated to near {211}< 124 >. It was thought that the crystal rotation from {110}< 113 > to near {211}< l24 > caused by an activation of {110} slip system which had the second largest schmid factor. {211}< 124 > was not known for the stable rolling texture, however {211}< 124 > intensity in present experiment was extremely strong. In addition, {211}< 124 > has geometric character that if it rotates by an activation of one slip system, it will revert to the initial crystal orientation {211}< 124 > by an activation of another slip system. In the case of the specimens containing carbon, {110}< 001 > rotated to {111}< 112 > and {100}< 011 > caused by deformation twinning. On the other hand, {110}< 113 > rotated to {211}< 113 >-{111}< 112 > during the cold rolling. The deformation twinning was also observed. It was thought that the crystal orientation in the deformation twinning rotated to near {111}< 112 > by an activation of {110} slip system.