Investigation of residual stress relaxation on Cr12MoV steel under high-frequency cyclic loading

Abstract High frequency vibratory stress relief (VSR) is a procedure to reduce the residual stresses by means of high frequency cyclic dynamic stress. Cyclic loading, or cyclic dynamic stress, imposed on the workpieces during the high frequency VSR affects the reduction of the residual stresses. In this study, the high frequency VSR was carried out on the Cr12MoV steel quenched specimens. And the residual stresses on the Cr12MoV steel surface before and after the high frequency VSR were studied by the hole-drilling method. The results show that the residual stresses can be effectively reduced by the high frequency VSR. Moreover, increasing the high frequency vibration frequency and the high frequency vibration amplitude can improve the effect of the high frequency VSR.