Abstract
It is established that under action Electrohydropulse Treatment (EHPT) the dislocation structure of metal of welded joints undergoes various changes depending on energy of loading pulses. The estimation of diffusion mobility of atoms in metals of welded steel 20 joints under action Electrohydropulse loading is carried out. It is shown that with increase of deformation speed mass-transfer coefficient, describing atom mobility, grows, i.e. EHPT welded joints intensifies process mass-transfer.