Failure analysis of AISI 430 stainless steel sheet under stretching and bending conditions

Ferritic stainless steels have been widely used to substitute austenitic because of their lower cost and higher deep drawing capacity. However, failures, such as shear fracture, observed in parts with small radii during the process applications where both bending stretching occurs. Conventional techniques, failure criterion consideration, finite element method, forming limit diagram, are unable predict this type which has hampered development new processes products. To overcome limitation, herein, we investigated effects tool radius, direction, test speed on formability fracture an AISI 430 steel sheet under conditions. An equipment was perform draw-bend (DBF) based tension test. The DBF efficiently reproduced tensile, mixed, fractures. Furthermore, determined strain outer surface, thickness, sidewall sample, well coefficient friction. data showed that radius thickness ratio related parameters had a direct impact experimental results. In addition, results can be utilized for setting design guidelines prevention.