Electron-microscopic investigation of high-strain-rate deformation produced by shock waves in the pearlitic structure of the grade 40 Kh steel

Upon high-strain-rate deformation under the action of shock waves, cementite plates in thin-lamel-lar pearlite are deformed and/or destroyed. "Fragments" of broken plates change their position relative to each other. The local (in a volume of 2 μm) shear, tensile, and torsional deformations were determined from regular displacements and rotations of fragments found upon electron-microscopic investigation. The local strain rates of deformations were also estimated.[PUBLICATION ABSTRACT]