Abstract
The results of welding specimens’ stress state studies before and after post weld heat treatment (PWHT) based on the metal magnetic memory (MMM) method are presented. The relationship between variation of the welded joint’s stress state and the intensity of the self-magnetic leakage field formed during welding under the action of a weak geomagnetic field is shown. Quick detection of welded joints stress state inhomogeneity zones by the MMM method and assessment of their variation after PWHT is proposed.
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