Effects of Rolling Temperature on Through-thickness Deformation and Recrystallization Textures in Heavily Rolled Silicon Steel

摘要

The silicon steel was rolled to 95% reduction at 20°C, 400°C and 600°C, and subsequently annealed at different temperatures to obtain complete recrystallization microstructure without appreciable grain growth. The effects of rolling temperature on through-thickness deformation and recrystallization textures were investigated by ODF analysis. The deformation textures are all composed of a- and γ-fiber, whereas a-fiber and {lll}<110> decrease and {lll}<112> increases with the increasing rolling temperature. Through-thickness recrystallization texture varied significantly, a strong partial γ-fiber spreading from {111}<112> or {554}<225> to {111}<134> and {114}<481> are developed in steel sheet rolled at 20°C and 400°C, while adominated r|-fiber peaked at {310}<001> is formed between surface and quarter thickness in steelsheet rolled at 600°C. The different recrystallization textures can be ascribed to the profuse shearband at 600cC compared with the microstructures at 20°C and 400°C.