Dynamic shear–strain localization and inclusion effects in lath martensitic steels subjected to high pressure loads

摘要: Abstract A three-dimensional multiple-slip dislocation-density based crystalline formulation, specialized finite-element formulations, and Voronoi tessellations adapted to martensitic orientations, were used investigate shear–strain localization, evolution in microstructures under dynamic compressive loading conditions. The formulation is on accounting for variant morphologies secondary-phase structures, initial dislocations-densities that are uniquely inherent microstructures. effects of strain rate inclusions the localization investigated. analysis indicates morphology orientations have a direct consequence accumulation inelastic microstructures, lath directions, arrangements critical characteristics high-strength behavior. It shown tensile hydrostatic pressure due unloading plastic waves at free boundary extensive occurs certain triple junctions. Furthermore, shear-slip between surrounding matrix results increases locations, such as trip