Determination of the mechanical behavior of nitrogen alloyed steels at strain rates 10(3) s(-1) < d epsilon/dt < 2 10(6) s(-1)

The mechanical behavior of the nitrogen steels P900, P2000, PANACEA and a g radient material has been investigated by means of various tests methods sp anning the strain late regime from quasi-static to high dynamic loading. Th e dynamic tests include Split-Hopkinson-Bar-Tests and Planar-Plate-Impact T ests in combination with a VISAR. Many steel types show a phase transition when loaded to pressure stresses exceeding 13 GPa. Contrary to the behavior of these steels this phase-transition is suppressed in nitrogen alloyed au stenitic steels due to the presence of nitrogen In addition to the determin ation of the quasi-static, dynamic and shock properties of the P900, P2000 and PANACEA the results of SEM examination of softly recovered shock loaded samples will be presented, yielding insight in the failure mechanisms at h igh rates of strain.