Evaluation of the heterogeneity of the stress state of welded joints prior to and after heat treatment using the method of the magnetic memory of metal

摘要

The results of investigations of the stress state of welded specimens prior to and after heat treatment using the method of magnetic memory (MMM) of the metal are presented. The relationship between the changes of the stress state of the welded joint and the strength of the intrinsic magnetic scattering field, formed in welding in the conditions of a weak geomagnetic field, is described. A method for the efficient determination of the zones of heterogeneity of the stress state of the welded joints by the MMM and the evaluation of the changes of after heat treatment is proposed.