Relationship between Primary Recrystallization Texture and Orientation of Secondary Recrystallized Grains in Al-Killed Steel

In attempt to clarify the mechanism of secondary recrystallization in aluminum killed steel, the orientation relationship between the secondary Goss grains and primary recrystallization texture was investigated by analysis of X-ray pole figure measurement. The main results obtained are as follows. (1) In 70% cold rolling reduction, the intensity of the Goss orientation is high in the primary recrystallization stage and the evolution of Goss texture is considered to be originated in the higher PCNΣ9 value, a product of the intensity of Goss orientation and the intensity of Σ9 orientation in relation to the Goss orientation (ICΣ9 value) in the primary matrix. (2) In 85% cold rolling reduction, the intensity of the Goss orientation in the primary matrix is lower, but the Goss orientation has a higher intensity of Σ9 orientations than any other orientations in the primary matrix. Therefore, the occurrence of the Goss secondary grains in this case is considered to be due to the higher ICΣ9 value.