Characterization of delayed cracking in deep-drawn Swift cups of metastable austenitic stainless steels

Fracture behaviour of metastable austenitic stainless steels (Cr‐Ni grade 301 and low‐Ni high‐Mn grades 201 and 204Cu) that suffer of delayed cracking after deep drawing was examined. The phenomenon of delayed cracking is known to be related to the coexistence of internal hydrogen, strain‐induced α′‐martensite and tensile residual stresses. The objective of this study was to maximize the information attainable from the common Swift cup test,...