Effect of Vibration Stress Relief on the Shape Stability of Aluminum Alloy 7075 Thin-Walled Parts

• Published in: Metals (Basel ) Vol. 9; no. 1; p. 27
• Main Authors: Gong, Hai, Sun, Yanjie, Liu, Yaoqiong, Wu, Yunxin, He, Yipeng, Sun, Xiaoliang, Zhang, Minghai
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.01.2019
• Subjects: Aeronautics; Aircraft; aluminum alloy thin-walled parts; Aluminum alloys; Aluminum base alloys; Deformation effects; Dimensional stability; Experiments; Metal fatigue; Residual stress; shape stability; Simulation; Stainless steel; Strain gauges; Stress concentration; Stress distribution; Vibration effects; Vibratory stress relieving; VSR
• ISSN: 2075-4701; 2075-4701
• DOI: 10.3390/met9010027

Aluminum alloy 7075 is one of the materials widely used in the manufacture of structural components used by aviation industries. High precision is required in producing the shapes of such components due to shape stability and dimensional accuracy being difficult to maintain throughout the different stages of manufacturing. In this work, an experimental study of the effect of VSR (Vibratory Stress Relief) on the deformation and residual stresses of aluminum alloy 7075 thin-walled components is presented. It was concluded that VSR improved the shape and size stability of the material to a significant level by relieving induced residual stresses in the thin-walled parts. Finally, more uniform residual stress distribution was obtained after the VSR treatment, compared to before the VSR treatment. This proved that VSR has a significant influence on improving the shape stability of the thin-walled aluminum alloy 7075 components.