Ridging phenomenon in ferritic stainless steels

FeCr17 ferritic steel sheets, after cold rolling and annealing, exhibits ridging in the case of rolling direction elongation. The resulting deterioration in surface quality is a severe and long known problem in industrial processing. This problem is here investigated by the SEM-EBSD technique (Electron Backscattering Diffraction in the Scanning Electron Microscope). The results of the single orientation analysis suggest that to clarify the origin of the ridging morphology earlier models such as that elaborated by Wright can be adopted. (author)