【摘 要】
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The stress relaxation behavior of different heat-treated 7050 aluminum alloy at aging temperature has been investigated.It is observed that the phenomenon of stress relaxation is accompanied by precip
【机 构】
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Fuzhou University, China Fujian University of Tec
【出 处】
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15th International Conference on Aluminium Alloys(ICAA15)(第十
论文部分内容阅读
The stress relaxation behavior of different heat-treated 7050 aluminum alloy at aging temperature has been investigated.It is observed that the phenomenon of stress relaxation is accompanied by precipitation process.Stress relaxation limit of 7050 aluminum alloy gradually increase with precipitates size increasing.However, in different heat-treated specimens, the intrinsic energy barriers to the movement of relaxing dislocation are similar and close to 2.3 eV, which is of the order of magnitude required for recovery processes.Based on the features of stress relaxation curves, the stress relaxation equation of the 7050 aluminum alloy is obtained, which can predict the stress relaxation limit and springback of 7050 aluminum alloy.
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