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Temperature distribution and mechanical properties of FSW medium thickness aluminum alloy 2219

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Abstract

Friction stir welding (FSW) is a solid-state jointing technology, and has the advantages of high joint strength, low residual stress, and small deformation after welding. During FSW, the welding temperature directly influences the quality of the weldment. A heat generation model of FSW medium thickness aluminum alloy 2219 is established considering the friction heat generated at the interface between the tool and the workpiece and the plastic deformation heat of the weldment material near the tool. The heat transfer model is set considering heat conduction, convection, and radiation. Using JMatPro technology, temperature-related material parameters of aluminum alloy 2219 are obtained. The built heat generation model is imported into the simulation software ABAQUS through the DFLUX subroutine, and the simulation of FSW process is achieved. The effectiveness of the simulation is verified by FSW experiments. The simulation has high prediction accuracy. Based on the simulation, the influence of welding parameters on temperature distribution is explored; subsequently the influence of welding temperature on mechanical properties of welded joint is also studied. The research guides the prediction of the temperature distribution and the improvement of the mechanical performance of FSW medium thickness aluminum alloy 2219.

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All data generated or analyzed during this study are included in this manuscript.

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The code is available on request.

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Funding

The research was supported by the National Key Research and Development Program of China (Grant No. 2019YFA0709003), the Dalian Science and Technology Innovation Fund (Grant No. 2020JJ26GX041), and the Fundamental Research Funds for the Central Universities (Grant No. DUT20ZD204. The financial contributions are gratefully acknowledged.

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Authors and Affiliations

  1. Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, 116024, Dalian, People’s Republic of China

    Xiaohong Lu, Yihan Luan, Xiangyue Meng & Yu Zhou

  2. School of Materials Science and Engineering, Dalian University of Technology, 116024, Dalian, People’s Republic of China

    Ning Zhao

  3. The George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0405, USA

    Steven Y. Liang

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  1. Xiaohong Lu
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  2. Yihan Luan
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  3. Xiangyue Meng
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  4. Yu Zhou
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  5. Ning Zhao
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  6. Steven Y. Liang
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Contributions

Xiaohong Lu: Conceptualization, Supervision, Methodology, Funding acquisition, Project administration. Yihan Luan: Conceptualization, Methodology, Software, Validation, Writing-original draft, Investigation, Writing-review and editing. Xiangyue Meng: Formal analysis, Data curation. Yu Zhou: Software, Investigation. Ning Zhao: Formal analysis. Steven Y. Liang: Resources.

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Correspondence to Xiaohong Lu.

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Lu, X., Luan, Y., Meng, X. et al. Temperature distribution and mechanical properties of FSW medium thickness aluminum alloy 2219. Int J Adv Manuf Technol 119, 7229–7241 (2022). https://doi.org/10.1007/s00170-021-08505-1

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