Formability Limit Diagrams of Extra-deep-drawing Steel at Elevated Temperatures

In the present work forming limit diagrams for extra deep drawing steel at room and elevated temperatures have been determined experimentally by conducting stretch forming operations using designed and fabricated warm forming tooling setup. With the help of FLDs formability of EDD steel has been analyzed and co-related with mechanical properties like strain hardening coefficient (n) and normal anisotropy (r-).Material properties of EDD steel are calculated at various temperatures and effect of these properties like work hardening exponent (n) anisotropy(r-) and strength of the material are co-related by FLDs at various temperatures.