Optimization of laser welding of DP780 to Al5052 joints for weld width and lap-shear force using response surface methodology. (June 2020)

• Record Type: Journal Article
• Authors: Liu, Guiqian; Gao, Xiangdong; Peng, Cong; Huang, Yijie; Fang, Haiji; Zhang, Yanxi; You, Deyong; Nanfeng, Zhang
• Is Part Of: Optics & laser technology. Volume 126(2020)
• Publication Date: 2020-06
• Subjects: Laser penetration welding -- Steel-Al dissimilar alloys -- Response surface methodology; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2020.106072
• Languages: English
• ISSNs: 0030-3992

Abstract

Graphical abstract: Highlights: Laser welding is applied to joint DP780 to Al5052 plates. Four types of steel-aluminum welded joint and fracture model are summarized. The response surface model of welding parameters are analyzed. The laser power and welding speed are significant effect on lap shear strength. Abstract: A laser welding of DP780 steel to Al5052 joint has been investigated to optimize the weld width and lap-shear force. Four types of steel-Al welded joints and fracture model have been proposed. Response surface methodology and central composite design were applied to develop mathematical relationships between the control parameters and the responses. Then, the validation and optimization experiments were carried out to check the models adequacy. The results show that there exists good consistency between the predicted and actual value. This indicates the developed models could predict the weld width and lap-shear force within the limits of the process parameters.