1979 Volume 65 Issue 12 Pages 1766-1773
The correspondence of the unduration of ridging after tensile test to that of microscopic etch-pattern due to the segregation of Cr and C in 18% Cr cold rolled and annealed stainless steel sheet was observed. The results are as follows.
(1) A laminated etch-pattern is observed at the center layer of transverse cross-section of hot rolled band. This laminated etch-pattern becomes wavy and is observed in the full-thickness of cold rolled and annealed sheet.
(2) The unduration of wavy etch-pattern nearly corresponds to that of ridging appeared after stretching the specimen to its rolling direction by 20%.
(3) The height of unduration of ridging is proportional to that of wavy etch-pattern.
(4) These facts suggest that the wavy etch-pattern to be the origin of ridging phenomenon in this steel sheet.