the hot deformation activation energy of 7050 aluminum alloy under three different deformation modes
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2016
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Abstract
In this study, the hot deformation activation energy values of 7050-T7451 aluminum alloy, calculated with two different methods under three deformation modes, were compared. The results showed that the hot deformation activation energy values obtained with the classical constitutive equation are nearly equivalent under the hot tensile, compression, and shear-compression deformation modes. Average values exhibited an obvious increase when calculated with the modified constitutive equation because it can reflect the variation of activation energy with deformation conditions such as deformation temperature, strain rate and strain state. Moreover, the values under tensile and compression deformation modes were nearly the same regardless of the calculation method. The higher average value under the shear-compression deformation mode with modified equation indicates that the strain state has a significant effect on the hot deformation activation energy. In addition, when the activation energy was investigated for various deformation conditions, the effect of the strain state on the activation energy was more significant. Under a certain condition, the activation energy was the same for the three deformation modes.
| Reference Key |
sang2016metalsthe
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|---|---|
| Authors | ;Deli Sang;Ruidong Fu;Yijun Li |
| Journal | seminars in cancer biology |
| Year | 2016 |
| DOI |
10.3390/met6030049
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| URL | |
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