Dynamic strength of the 15Kh2NMFA steel in the range of sub-microsecond durations of shock-wave load
The results of measurements of the free surface velocity histories of the 15Kh2NMFA high-strength steel samples are presented. From these measurements, the dependences of the resistance to deformation and fracture of the steel on the strain rate have been evaluated. The results are compared with similar data for iron in different structural states. It has been found that the steel is characterized by twice higher dynamic tensile strength than iron, with almost equal values of the Hugoniot dynamic limit.