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Effect of Laser Power on Microstructure and Properties of 6061 Aluminum Alloy Welded Joint

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Abstract

In this study, the effect of laser power on the weld seam forming, microstructure and mechanical properties was carried out with 6061 aluminum alloy plate, which was welded with ER4047 as filler material. The results show that with the increase in laser power, the weld width and weld width ratio RW are increased, the RW is close to 1, and the joint formability and mechanical properties are better, when the laser power is 3000 W. The weld is mainly composed of equiaxed crystals and columnar crystals with ({001} < 100 > ) strong cube texture, with the largest volume fraction of columnar crystals at 2500 W laser power and the largest number of equiaxed crystal integrals at 3000 W laser power. The failure positions of the samples with laser power of 2000 W and 2500 W were close to the fusion line, while the failure position of the samples with laser power of 3000 W was in the center of the weld.

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Acknowledgements

This work was financially supported by the Natural Science Foundation of Hunan Province (2023JJ50174), the Key Scientific Research Project of Education Department of Hunan Province (20A147) and the Project of Industry-University Cooperation and Collaborative Education of Ministry of Education (220506429021607).

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Authors and Affiliations

  1. College of Materials and Advanced Manufacturing, Hunan University of Technology, Zhuzhou, 412007, China

    Haigen Jian & Jiangyao Wu

  2. Guangdong Fenghua Zhuoli Technology Co., Ltd., Foshan, 528200, China

    Wei Zhang

  3. Shandong Key Laboratory of Advanced Aluminum Materials and Technology, Binzhou, 262207, China

    Junjun Pai

  4. OKE CNC Precision Tool Co., Ltd., Hunan Zhuzhou, 412500, China

    Haigen Jian

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  1. Haigen Jian
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  2. Jiangyao Wu
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Correspondence to Junjun Pai.

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Jian, H., Wu, J., Zhang, W. et al. Effect of Laser Power on Microstructure and Properties of 6061 Aluminum Alloy Welded Joint. Metallogr. Microstruct. Anal. 12, 683–691 (2023). https://doi.org/10.1007/s13632-023-00981-z

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  • DOI: https://doi.org/10.1007/s13632-023-00981-z

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