热成形工艺参数对AA6082铝合金性能的影响（英文）

发布时间：2018-07-05 20:37

本文选题：铝合金AA + 力学性能　；参考：《Transactions of Nonferrous Metals Society of China》2017年11期

【摘要】：基于铝合金热冲压工艺,通过热物理模拟实验的方法,研究了工艺参数对AA6082铝合金力学性能的影响规律。利用透射电子显微镜分析了强化相分布和强化机理,建立了针对AA6082铝合金热冲压工艺的形变强化新模型,并通过遗传算法工具箱确定了模型中的材料常数。该模型可以预测不同工况下材料性能的演化行为,得到AA6082铝合金形变强化模型预测值与实验值的Pearson相关系数为0.99402、平均相对误差为2.0054%、均方根误差为2.045,说明预测度很好。将模型二次开发入有限元仿真软件ABAQUS中,从而实现对铝合金热冲压杯形件在不同时效条件下性能的预测。
[Abstract]:Based on the hot stamping process of aluminum alloy, the influence of process parameters on mechanical properties of AA6082 aluminum alloy was studied by means of thermophysical simulation experiment. The phase distribution and strengthening mechanism of AA6082 aluminum alloy were analyzed by transmission electron microscope (TEM). A new deformation hardening model for AA6082 aluminum alloy hot stamping process was established, and the material constants in the model were determined by genetic algorithm toolbox. The model can predict the evolution behavior of material properties under different working conditions. The Pearson correlation coefficient between the predicted value of AA6082 aluminum alloy deformation strengthening model and the experimental value is 0.99402, the average relative error is 2.0054 and the root mean square error is 2.045, which shows that the prediction degree is very good. The model was redeveloped into the finite element simulation software Abaqus to predict the performance of hot stamping cup of aluminum alloy under different aging conditions.
【作者单位】：北京科技大学机械工程学院;Department
【基金】：Project(P2014-15)supported by the State Key Laboratory of Materials Processing and Die and Mould Technology,Huazhong University of Science and Technology,China Project(20120006110017)supported by the Specialized Research Fund for the Doctoral Program of Higher Education of China Project(2015M580977)supported by China Postdoctoral Science Foundation Project supported by Beijing Laboratory of Metallic Materials and Processing for Modern Transportation,China
【分类号】：TG146.21;TG306

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