Plastic strain behavior near the tip of the crack in conducting crystal

摘要

An estimation of the contributions of different mechanisms into electrostimulated plastic deformation of crystal near the tip of cracks has been carried out. Effect of Joule heat deposition at direct current transmission, heating zome transference (Thomson effect), pondermotive forces action, and electroplastic effect ("electron wind") have been considered. The spatial distributions and time evolutions of plastic strain and stress intensity factor under DC transmission near a crack tip of alpha-Fe crystal have been determined and discussed.