Influence of Stress Field and Temperature Field on Residual Stress of 2A14 Aluminum Alloy Based on In Situ SAXS Method |
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| Authors: | Guanghui Yang Bing Xue Zhengyi Li Gang Zhou Shaohua Zhang Ning Lu Lei Wen Duzhou Zhang |
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| Affiliation: | 1.National Center for Materials Service Safety, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China;2.Beijing Institute of Control Engineering, Beijing 100081, China;3.China Academy of Space Technology, Beijing 100081, China |
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| Abstract: | In this paper, based on in situ synchrotron radiation SAXS technology, the effects of stress field, temperature field and thermo-mechanical coupling conditions on the evolution of residual stress are discussed, respectively. The results show that the continuous increase of the external load led to the increase of the residual stress perpendicular to the tensile direction of the 2A14 aluminum alloy, and when the external load closed to the yield strength, the change of the residual stress was no longer significant. Under the action of temperature, the residual stress of 2A14 aluminum alloy reduced after the process of heating–holding–cooling. Under the action of thermo-mechanical coupling, the recovery effect of aluminum alloy was triggered, the energy storage of deformation was released, the lattice strain was reduced and the residual stress introduced by external load was reduced. |
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| Keywords: | synchrotron radiation residual stress aluminum alloy thermo-mechanical coupling |
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