Keyword: «ultrasonic impact treatment»

The study is devoted to the urgent problem of residual welding stress management in welded joints made of low-alloy steel 10XSD. The effect of ultrasonic shock treatment (UO) on the redistribution of HP after welding at room and subzero temperatures has been experimentally studied. It is established that after welding, significant tensile stresses are formed in the seam area, the level of which increases during low-temperature welding. It is shown that UO effectively transforms tensile stresses into compressive stresses, which contributes to an increase in the fatigue life of joints.