Effect of Asymmetric Rolling on Microstructures,Texture and Formability of SUS430 Ferritic Stainless Steel

The effect of asymmetric rolling on microstructure,texture evolution,and formability of SUS430 ferritic stainless steel sheet has been investigated by using X-ray diffraction(XRD) and optical microscopy.The results showed that grains could be appropriately refined by asynchronous rolling,but the grain sizedistribution was not uniform.Texture evolution analysis indicated that uniform and complete γ fiber texture along thickness could be obtained after one-step rolling,but texture intensity is weak.However,applying two-step asynchronous rolling technology,recrystallization texture with nearly random orientation was achieved after double annealing processes.A comprehensive analysis further indicated that one-step rolling technology was beneficial to the performance improvement.