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Effect of Laser Power on Hybrid Laser-Gas Metal Arc Welding (GMAW) of a 6061 Aluminum Alloy

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Abstract

The effect of laser power on the geometrical characteristics, microstructure and micro-hardness of the welding joints for 6061 aluminum alloy after hybrid laser-gas metal arc welding (GMAW) was investigated. The results showed that the welding joints from “Bottom” to “Top” were mainly composed of planar crystals, columnar crystals, and equiaxed dendrites. With increasing laser power, the weld depth and width and the grain size increased. When the laser power reached 5 kW, pores could be found in the weld pool region. Micro-hardness measurements showed that the application of higher laser power hardly changed the hardness of the welding joint.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (Nos. 51975263 and 51575252).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, China

    Huiling Zhou, Fanglian Fu, Yanxin Qiao, Jian Chen, Lanlan Yang & Wen Liu

  2. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China

    Zhixin Dai

Authors
  1. Huiling Zhou
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  2. Fanglian Fu
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  3. Zhixin Dai
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  4. Yanxin Qiao
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  5. Jian Chen
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  6. Lanlan Yang
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  7. Wen Liu
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Corresponding authors

Correspondence to Yanxin Qiao or Jian Chen.

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Zhou, H., Fu, F., Dai, Z. et al. Effect of Laser Power on Hybrid Laser-Gas Metal Arc Welding (GMAW) of a 6061 Aluminum Alloy. J. Korean Phys. Soc. 77, 991–996 (2020). https://doi.org/10.3938/jkps.77.991

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  • DOI: https://doi.org/10.3938/jkps.77.991

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