| Abstract Scope |
Hot stamping is a high temperature and high strain rate deformation process, used in automotive industries due to the advantages associated with the process like higher formability, no spring back, higher specific strength etc. it is found that when strain rate increases, the formability of materials decreases but in some conditions reversal behavior was also observed, therefore in this paper, our focus is to find the effect of strain rate on thickness distribution, thickness gradient, formability and fractography of 22MnB5 Steel. To capture the effect of strain rate, a wide range of high-temperature tensile tests were conducted in the thermomechanical simulator (Gleeble-3800) for different strain rates (0.01, 0.1, 1/s) under uniaxial and plain strain conditions. Stress vs strain response of the material is used for constitutive modelling of the hot stamping process. |