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Wang Y.,Central South University | Wang Y.,Light Alloy Research Institute of CSU | Deng Y.-L.,Central South University | Deng Y.-L.,Light Alloy Research Institute of CSU | And 4 more authors.
Hangkong Cailiao Xuebao/Journal of Aeronautical Materials

The Vibratory field was applied to the process of creep aging forming of water-quenched 7055 aluminum alloy sheets, which were operated on the self-made single curvature die and vibratory platform. The effects of temperature and vibration mode on the springback value, mechanical properties and microstructures were investigated. The results show that within a certain range of time, the springback value is reduced and the rate of stress relief is accelerated. Meanwhile, the precipitation is promoted and the distribution of precipitates is more dispersion, as a consequence, the strength of the alloy is improved on a considerable extent. On the experimental conditions of this paper, the strength of the VCAF specimens is increased with 7%, and the springback value is decreased with 12.3%. Source

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