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Research on the influence of laser process parameters on the quality of magnesium alloy laser cutting

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Abstract

A high-power fiber laser was used to cut AZ31B magnesium alloy. The effects of laser cutting speed, assisted air pressure, and defocus on cutting quality were studied systematically. Scanning electron microscope and ultra-depth-of-field three-dimensional microscope were used to observe the morphology of kerf and the cutting surface. The results show that the kerf width at the straight line and the kerf width at the sharp corner always keep the synchronous change law. The cutting surface can usually be divided into three areas: top area, scour area, and stripe area. The change of the area of the three regions has an important influence on the roughness value of the cutting surface. Studying the variation of roughness by studying the variation of three areas is applicable to laser cutting speed and assisted air pressure, but not to defocus. The slag height decreases from 75.87 to 46.83 μm with the increase of laser cutting speed. The slag height decreases rapidly to 52.88 μm and then increases slowly to 61.74 μm with the change of defocus. The slag height decreases rapidly from 58.37 to 24.81 μm with the increase of assisted air pressure.

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The authors confirm that the data supporting the findings of this work are available within the article. Raw data that support the findings of the study are available from the corresponding author, upon reasonable request.

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Funding

This material is based upon work supported by the National Natural Science Foundation of China (grant no. 52371102), Natural Science Foundation of Heilongjiang Province of China (grant no. LH2022C009).

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin, 150040, China

    Zhe Wu, Yulong Liu, Sijia Wang, Chengwei Li & Zhen Zhang

  2. College of Science, Northeast Forestry University, Harbin, 150040, China

    Yang Zhang

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Contributions

Data curation: Zhe Wu; methodology: Yang Zhang and Yulong Liu; writing—original draft: Zhe Wu; writing—review and editing: Yulong Liu, Chengwei Li, and Zhen Zhang. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Yang Zhang.

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Wu, Z., Liu, Y., Wang, S. et al. Research on the influence of laser process parameters on the quality of magnesium alloy laser cutting. Int J Adv Manuf Technol (2024). https://doi.org/10.1007/s00170-024-13718-1

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