Recrystallization Textures in Aluminum Killed Low Carbon Cold Rolled Steel Sheets

Abstract

The effects of AlN on the recrystallization textures in commercial low carbon aluminum killed cold rolled steel sheets were examined using electron microscopy and X-ray diffraction techniques. Final microstructures and textures were found to be related to the holding time and the temperature of heat treatment before cold rolling. The precipitation of AlN before cold rolling gave the tendency to increase the (110)[001] texture and to decrease the (111)[1\={1}0] and (111)[11\={2}] textures after annealing. Electron microscopy indicated that AlN, precipitated on cell walls and dislocations prior to recrystallization, inhibited the subgrain formation. Therefore in aluminum killed steel, the recrystallization seems to occur without such subgrain coalescence as observed in rimmed steel. The effects of AlN precipitated prior to recrystallization on the textures were also discussed.