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7055铝合金回归再时效性能预测与工艺优化方法
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作者 秦国华 徐纳 +1 位作者 林锋 吴竹溪 《中国有色金属学报》 北大核心 2025年第7期2298-2314,共17页
时效工艺参数会影响铝合金的性能,为了提高7055铝合金的性能,利用正交实验设计方法,确定回归再时效(RRA)实验的工艺参数组合,根据实验数据建立硬度、电导率的时效性能的动态响应面预测模型,以此分析了回归再时效的工艺参数对7055铝合金... 时效工艺参数会影响铝合金的性能,为了提高7055铝合金的性能,利用正交实验设计方法,确定回归再时效(RRA)实验的工艺参数组合,根据实验数据建立硬度、电导率的时效性能的动态响应面预测模型,以此分析了回归再时效的工艺参数对7055铝合金硬度、电导率的影响。建立了以硬度、电导率为目标的多目标优化模型,使用非支配排序遗传算法进行求解,同时对优化结果进行了实验验证。结果表明:分别采用欠时效+低温长时回归处理或过时效+高温短时回归处理时,7055铝合金实现了电导率与硬度的协同优化。电导率和硬度的预测值与实验值的误差均不超过5%。提出的基于性能预测模型的回归再时效工艺参数多目标优化方法,不仅能够降低铝合金热处理工艺摸索的成本,而且为回归再时效工艺参数的合理选择提供了理论依据。 展开更多
关键词 回归再时效 响应面法 非支配排序遗传算法 多目标优化 时效工艺参数
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Parametric optimization of friction stir welding process of age hardenable aluminum alloys-ANFIS modeling 被引量:2
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作者 D.Vijayan V.Seshagiri Rao 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第8期1847-1857,共11页
A comparative approach was performed between the response surface method(RSM) and the adaptive neuro-fuzzy inference system(ANFIS) to enhance the tensile properties, including the ultimate tensile strength and the ten... A comparative approach was performed between the response surface method(RSM) and the adaptive neuro-fuzzy inference system(ANFIS) to enhance the tensile properties, including the ultimate tensile strength and the tensile elongation, of friction stir welded age hardenable AA6061 and AA2024 aluminum alloys. The effects of the welding parameters, namely the tool rotational speed, welding speed, axial load and pin profile, on the ultimate tensile strength and the tensile elongation were analyzed using a three-level, four-factor Box-Behnken experimental design. The developed design was utilized to train the ANFIS models. The predictive capabilities of RSM and ANFIS were compared based on the root mean square error, the mean absolute error, and the correlation coefficient based on the obtained data set. The results demonstrate that the developed ANFIS models are more effective than the RSM model. 展开更多
关键词 aluminum alloys response surface method(RSM) adaptive neuro-fuzzy inference system(ANFIS) friction stir welding Box-Behnken design neuro fuzzy
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