Shock-wave behavior of structural nitrogen-bearing steel after heat treatment under various conditions

04Kh20G11N6M2AFB steel is subjected to shock tests in the following two states: after high-temperature mechanical treatment (HTMT) and after HTMT followed by quenching. The dynamic yield strength, the spall strength, and the structural transition threshold induced by shock loading are determined. It is shown that these parameters weakly depend on the shock loading rate in the steel after HTMT and increase slightly in the steel quenched from a temperature of 1100°C. In both cases, the mass velocity defect at a compression pulse plateau increases sharply beginning from a certain threshold strain rate, which indicates a high energy absorption ability of the steel.