本文選題：鋁合金AA + 力學(xué)性能��； 參考：《Transactions of Nonferrous Metals Society of China》2017年11期

【摘要】：基于鋁合金熱沖壓工藝,通過(guò)熱物理模擬實(shí)驗(yàn)的方法,研究了工藝參數(shù)對(duì)AA6082鋁合金力學(xué)性能的影響規(guī)律。利用透射電子顯微鏡分析了強(qiáng)化相分布和強(qiáng)化機(jī)理,建立了針對(duì)AA6082鋁合金熱沖壓工藝的形變強(qiáng)化新模型,并通過(guò)遺傳算法工具箱確定了模型中的材料常數(shù)。該模型可以預(yù)測(cè)不同工況下材料性能的演化行為,得到AA6082鋁合金形變強(qiáng)化模型預(yù)測(cè)值與實(shí)驗(yàn)值的Pearson相關(guān)系數(shù)為0.99402、平均相對(duì)誤差為2.0054%、均方根誤差為2.045,說(shuō)明預(yù)測(cè)度很好。將模型二次開(kāi)發(fā)入有限元仿真軟件ABAQUS中,從而實(shí)現(xiàn)對(duì)鋁合金熱沖壓杯形件在不同時(shí)效條件下性能的預(yù)測(cè)。
[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.
【作者單位】： 北京科技大學(xué)機(jī)械工程學(xué)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
【分類號(hào)】：TG146.21;TG306

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本文編號(hào)：2101704