Study of dynamic plastic deformation of a nitrogen alloyed steel using single and symmetric Taylor testing

The present investigation examines the dynamic plastic deformation of a mod erate-strength high-ductility austenitic steel at strain rates ranging from 10(3) to 10(4) s(-1) using Taylor tests. Single and symmetric Taylor testi ng was employed to generate large plastic deformation under different stres s states. The dynamic plastic deformation was analyzed through numerical si mulations and scanning electron microscope observations of the Taylor speci mens. The simulations were conducted with a Johnson-Cook constitutive model calibrated up to 300 degrees C and 5 x 10(3) s(-1).