Research status of surface ridging of ferritic stainless steel
Surface ridging is one of the most common defects in the forming process of ferritic stainless steel.In this paper,the surface ridging phenomenon and the ridging hazards are first introduced.Then,the research progress of the surface ridging mechanism is described,and it is pointed out that the presence of grain colonics with<001>//ND orientation or the high texture volume fraction of<001>//ND is the main reason for surface ridging.Based on the mechanism of surface ridging,the measures to reduce the surface ridging of ferritic stainless steel are intro-duced,such as optimizing the chemical composition,controlling the hot rolling process,cold rolling process and an-nealing process.Finally,the development trend of surface ridging research of ferritic stainless steel is prospected.
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