Improving the mechanical property of dissimilar Al/Mg hybrid friction stir welding joint by PIO-ANN
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第18期
论文作者：Wei Hu Zhongwei Ma Shude Ji Qi Song Wenhui Jiang
文章页码：41 - 52
摘 要：Ultrasonic-stationary shoulder assisted friction stir welding（U-SSFSW） is a novel hybrid welding technique, which reveals promising prospect in joining Al/Mg dissimilar alloys. A thorough understanding of U-SSFSW process is imperative for the further application of this technique. Pigeon-inspired optimization（PIO） is a swarm intelligent optimization algorithm and is proposed in mathematical modeling and process optimization by artificial intelligence. In this study, PIO optimized artificial neural network（PIOANN） was firstly established to acquire the relationships between the inputs and output of the Al/Mg welding process by U-SSFSW technique. A reliable PIO-ANN was achieved and the joint with a tensile strength of 161 MPa was acquired under the PIO optimized parameters. This tensile strength is higher than any ever-reported results with the similar welding condition. The joint formation, microstructure,microhardness and fracture behaviors were systemically investigated based on the reported studies and the confirmation experiment of this study to explore the enhancing mechanism of U-SSFSW Al/Mg joint.
Wei Hu1,2，Zhongwei Ma1，Shude Ji1,2，Qi Song1,2，Wenhui Jiang2,3
1. College of Aerospace Engineering, Shenyang Aerospace University
摘 要：Ultrasonic-stationary shoulder assisted friction stir welding（U-SSFSW） is a novel hybrid welding technique, which reveals promising prospect in joining Al/Mg dissimilar alloys. A thorough understanding of U-SSFSW process is imperative for the further application of this technique. Pigeon-inspired optimization（PIO） is a swarm intelligent optimization algorithm and is proposed in mathematical modeling and process optimization by artificial intelligence. In this study, PIO optimized artificial neural network（PIOANN） was firstly established to acquire the relationships between the inputs and output of the Al/Mg welding process by U-SSFSW technique. A reliable PIO-ANN was achieved and the joint with a tensile strength of 161 MPa was acquired under the PIO optimized parameters. This tensile strength is higher than any ever-reported results with the similar welding condition. The joint formation, microstructure,microhardness and fracture behaviors were systemically investigated based on the reported studies and the confirmation experiment of this study to explore the enhancing mechanism of U-SSFSW Al/Mg joint.
关键词：
