Investigation of the mechanism for reduction of residual stress through magnetic-vibration stress relief treatment

This article presents a comprehensive evaluation of a new residual stress reduction method based on magnetic-vibration stress relief treatment for cold-rolled DP590 high-strength steel plate. The effectiveness of magnetic-vibration stress relief treatment is compared to that of other treatment methods such as vibration treatment alone, magnetic treatment alone, and sequential combinations of vibration and magnetic treatment. The experimental results indicate that magnetic-vibration stress relief treatment is more effective than other methods in reducing residual stress. Specifically, magnetic-vibration stress relief treatment reduces transverse residual stress by approximately 39.42% and longitudinal residual stress by approximately 54.52%. In contrast, single vibration treatment reduces transverse residual stress by approximately 19.65% and longitudinal residual stress by approximately 19.31%, and single magnetic treatment reduces transverse residual stress by approximately 18.16% and longitudinal residual stress by approximately 7.12%. Theoretical analysis based on first principles reveals that ferromagnetic materials exhibit a stress-magnetic effect that can be exploited to soften and deform the material, leading to enhanced reduction effects during magnetic-vibration stress relief treatment.