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Abstract：
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The isothermal compression tests of 5A06 aluminum alloy under the deformation temperatures of 300, 350, 400, 450, 500 ℃ and the strain rates of 0.01,0.1,1,10 s-1 were conducted by the thermal simulation test machine, and the influences of deformation temperature and strain rate on the hot deformation behavior of 5A06 aluminum alloy were analyzed. Then, the Johnson Cook initial constitutive model of 5A06 aluminum alloy was established based on the experimental data, and the model was modified. The results show that the hot deformation stress of 5A06 aluminum alloy during hot compression is related to the deformation temperature, strain and strain rate. With the increasing of strain, the hot deformation stress first increases rapidly, and then decreases gradually until it is stable, it decreases with the increasing of deformation temperature and increases with the increasing of strain rate. Compared with Johnson Cook initial constitutive model, the modified constitutive model has higher prediction precision, the relationship between hot deformation stress and hot deformation conditions of 5A06 aluminum alloy is expressed more accurately.
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Funds：
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重庆市技术创新与应用发展重点项目（cstc2019jscx-fxyd0317）；重庆工商大学校级项目（950318062）
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AuthorIntro：
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王敬（1983-），女，博士，副教授，E-mail：wangjing-0113@163.com
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Reference：
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