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Translated from Problemy Prochnosti, No. 3, pp. 123 ??? 131, May ??? June, 2011Experimental results demonstrate that in an AMg6 alloy specimen after pulsed electromagnetic treatment, a significant decrease and redistribution of residual welding stresses are observed. Numerical simulation corroborates that the treatment effect is not associated with a thermal field influenc

The present work was aimed at the development of a new technological process: a post-weld electrodynamic treatment of welded joints by pulses of a high-density current. Generators of the pulse current and electrode devices, realizing the preset parameters of electrodynamic effects at single- and two-channel schemes, were designed and manufactured. The results of experimental investigations, carried out on specimens of base metal and welded joints, showed that the electrodynamic treatment has a positive effect on the structure of the treated metal and allows the residual stresses in welded joints to decrease gently, increasing their resistance to fatigue and brittle fracture as well as eliminating the distortion deformations in thin-walled elements of structures. The developed technologies and equipment gave an opportunity to perform the electrodynamic treatment of welded joints of hull structures of ships of aluminum alloy AMg6 and repair welds of an intermediate casing of the aircraft engine of heat-resistant magnesium alloy ML10, thus promoting an increase in their service reliability and life.