Effect of Warm Rolling on the Rolling and Recrystallization Textures of Non-oriented 3% Si Steel

Abstract

The effect of warm rolling in the 50 degrees C-300 degrees C temperature range on the microstructure, stored energy and crystallographic texture of a 3 mass-% Si steel was analyzed. Both rolling and annealing texture were significantly affected by warm rolling. Dynamic strain aging (DSA) was observed in the temperature range 150 degrees C-300 degrees C. The stored energy, E-< hkl >(S) of < hkl > parallel to ND oriented grains in the steel warm rolled at 200 degrees C was found to decrease in the following order: E-< 111 >(S) E-< 110 >(S) >> E-< 100 >(S) >= E-< 112 >(S). A pronounced {110}< 001 > recrystallization annealing texture was observed in specimens warm rolled in the DSA temperature range. The effect is due to the formation of {110}< 001 > oriented nuclei in deformation bands occurring in < 110 > parallel to ND oriented grains after warm rolling. The deformation bands are believed to be caused by the strain localization associated with dynamic strain ageing.