The Effect of Initial Textures on Ridging in STS 430 Steel

STS 430 강판의 리징 현상에 미치는 초기집합조직의 영향

Recrystallization textures of ferritic stainless steel sheets of STS 430 were varied by means of different cold rolling procedures. The conventional normal rolling led to the evolution of strong through-thickness texture gradients in the final recrystallization texture, while the cross-rolling led to a decrease in texture gradients. Micro-texture observation by EBSD revealed that the formation of band-like orientation colonies formed close to the center layer was responsible for ridging. Modification of the recrystallization texture and microstructure by cross-rolling destroyed band-like orientation colonies and consequently reduced the ridging height.