Texture comparison of an ordinary IF steel and a high-strength IF steel under ferritic rolling and high-temperature coiling

Abstract

The present work was performed to investigate the texture difference of an ordinary Ti-IF steel and a high-strength Ti-IF steel under ferritic hot rolling and high-temperature coiling. Comparing with the completely recrystallized textures of the ordinary IF steel, the textures of the high-strength IF steel were still deformed textures. The texture difference for the two steels is related to high P content in the high-strength IF steel which prevents the recrystallization during the coiling process. For the ordinary IF steel, the texture components were mainly very weak {001}〈110〉 orientation at the surface, and partial 〈110〉//RD (rolling direction) textures focused on {223}〈110〉 orientation and 〈111〉/ND (normal direction) texture at the mid-section and 1/4-section. For the high-strength IF steel, the texture components were mainly of {110}〈001〉 orientation at the surface and of a sharp 〈110〉//RD texture from {001}〈110〉 to {223}〈110〉 and weak 〈111〉/ND texture at the mid-section and 1/4-section.