Detailed DescriptionVibration stress elimination essentially involves the superposition of cyclic stress and residual stress, causing local plastic deformation to release the stress. Here, the residual stress acts to enhance the cyclic stress level by increasing the average stress.

　　Vibration treatment involves applying a cyclic stress to components. When the amplitude of the cyclic stress combined with the residual stress at certain points on the component reaches the material's yield limit, these points will undergo plastic deformation. If this cyclic stress causes lattice slip at certain points, microscopic plastic deformation can also occur even if the yield limit is not reached macroscopically. Moreover, these plastic deformations often occur first at points with residual stress, thereby releasing the constrained deformation of these points and reducing the residual stress. This is the mechanism by which vibration aging can eliminate residual stress.

　　Stress relief is achieved after a certain number of cycles of alternating stress, which is the result of the Bauschinger effect.