Deformation Control by VSR Technique on Al alloy Thin-Walled Components

Initial residual stress and machining stress of Al-alloy materials are the main factors that cause the deformation of Al-alloy thin-walled components. According to the theory of plastic yield and analysis of the stress-deformation characteristics in materials, the component is treated by using vibration stress relief (VSR) technology under three different aging of 30 min, 60 min and 90 min, after that the deformation are measured by coordinate machine respectively. The results of experiment present that, based on the balance of structural stress, after VSR aging 30 min, the component comes to deformation and becomes flatter than one before VSR. Similarly, as for complicated thin-walled component, the VSR aging time to achieve this effect mentioned above is about 90 min. The research manifests that VSR has a positive impact on deformation control of component even if structural stress level is extremely low in material.