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Research on the improvement of flat-clinching jointed aluminum alloy by reshaping process

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Abstract

In recent years, the flat-clinching process was gradually attracting attention due to the widespread application prospects in joining lightweight materials. However, the unsightly joint bulge may limit the use of the flat-clinching process. In this article, a novel reshaping process was proposed to overcome the shortcomings of flat-clinching joints. Reshaping flat-clinching joints in material AL5052 was produced by different reshaping forces. Meanwhile, the forming mechanism and material flow of the reshaping process were studied experimentally. The influence of different reshaping forces on the mechanical properties and geometric parameters of the joint was illustrated. The study results show that the reshaping process not only reduces the bulge height but also improves the mechanical properties of the joint. The reshaping process increases the neck thickness and interlocking value of the joint, leading to enhanced tensile and shear loads. This tendency becomes greater as the reshaping force increases. The flat-clinching joint with 40 kN reshaping force exhibits the highest mechanical properties, enhancing the shear load by 24.2% and the tensile load by 8.6% compared to the joint without the reshaping process.

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Funding

This research work is supported by the National Natural Science Foundation of China (Grant No. 52275398), Central South University Innovation-Driven Research Programme (Grant No. 2023CXQD069), Hunan Provincial Natural Science Foundation for Excellent Young Scholars (Grant No. 2021JJ20059), the Project of State Key Laboratory of High Performance Complex Manufacturing, Central South University (Grant No. ZZYJKT2022-01), Huxiang Young Talents Program of Hunan Province (No. 2021RC3024), Huxiang High-Level Talent Gathering Project of Hunan Province (Grant No. 2021RC5001), and Fundamental Research Funds for the Central Universities of Central South University (Grant Number 2023ZZTS0625).

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Authors and Affiliations

  1. Light Alloy Research Institute, Central South University, Changsha, 410083, China

    Xiao Ouyang, Huiyang Zhang & Chao Chen

  2. State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University, Changsha, 410083, China

    Xiao Ouyang, Huiyang Zhang & Chao Chen

  3. School of Mechanical and Electrical Engineering, Central South University, Changsha, 410083, China

    Xiao Ouyang, Huiyang Zhang & Chao Chen

  4. Nanjing Research Institute of Electronics Technology, Nanjing, 210039, China

    Liuxi Duan

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  1. Xiao Ouyang
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  2. Huiyang Zhang
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  4. Chao Chen
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Contributions

Xiao Ouyang, Huiyang Zhang, and Liuxi Duan analyzed the data; Chao Chen contributed reagents/materials/analysis tools; Xiao Ouyang and Zhang Huiyang wrote the paper.

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Correspondence to Chao Chen.

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Ouyang, X., Zhang, H., Duan, L. et al. Research on the improvement of flat-clinching jointed aluminum alloy by reshaping process. Int J Adv Manuf Technol 127, 2553–2562 (2023). https://doi.org/10.1007/s00170-023-11608-6

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  • DOI: https://doi.org/10.1007/s00170-023-11608-6

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