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Laser & Optoelectronics Progress, Volume. 61, Issue 21, 2114009(2024)

Comparative Study on Welding Characteristics of Laser-MIG Hybrid Welding and MIG Welding for Aluminum-Alloy Crossbeam Components of High-Speed Train

Zhibin Yang*, Likang Sheng, and Yanqi Xie
Author Affiliations
  • School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning , China
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    AbstractGet PDF(in Chinese)
    Figures&Tables (11)
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    References (27)
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    Figures & Tables(11)
    Groove diagrams of high-speed train aluminum alloy crossbeam components for different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

    Fig. 1. Groove diagrams of high-speed train aluminum alloy crossbeam components for different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

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    Schematic diagrams of high-speed train aluminum alloy crossbeam components for different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

    Fig. 2. Schematic diagrams of high-speed train aluminum alloy crossbeam components for different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

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    Schematic diagram of tensile testing specimen

    Fig. 3. Schematic diagram of tensile testing specimen

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    Cross-section, surface formation, and porosity defects of high-speed train aluminum alloy crossbeam components with different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

    Fig. 4. Cross-section, surface formation, and porosity defects of high-speed train aluminum alloy crossbeam components with different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

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    Microstructure in each area of the welds with different welding methods. (a) Weld center of laser-MIG hybrid welding; (b) near fusion line of laser-MIG hybrid welding; (c) weld center of MIG welding; (d) near fusion line of MIG welding

    Fig. 5. Microstructure in each area of the welds with different welding methods. (a) Weld center of laser-MIG hybrid welding; (b) near fusion line of laser-MIG hybrid welding; (c) weld center of MIG welding; (d) near fusion line of MIG welding

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    Interlayer microstructures of MIG welding. (a) Weld edge;(b) weld center

    Fig. 6. Interlayer microstructures of MIG welding. (a) Weld edge;(b) weld center

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    Microhardness distributions of laser-MIG hybrid welded and MIG welded joints

    Fig. 7. Microhardness distributions of laser-MIG hybrid welded and MIG welded joints

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    Tensile testing results of different welding methods

    Fig. 8. Tensile testing results of different welding methods

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    Fracture features of tensile testing specimen with different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

    Fig. 9. Fracture features of tensile testing specimen with different welding methods. (a) Laser-MIG hybrid welding; (b) MIG welding

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    • Table 1. Chemical composition of the base material and filler wire

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      Table 1. Chemical composition of the base material and filler wire

      MaterialMass fraction /%
      SiFeCuMnMgCrZnTiAl
      6005A-T60.5‒0.9≤0.35≤0.3≤0.50.4~0.7≤0.3≤0.2≤0.1Bal.
      5083-O≤0.4≤0.4≤0.10.4‒1.04.0‒4.90.05‒0.2≤0.25≤0.15Bal.
      ER53560.100.40.10.154.80.10.10.13Bal.

    • Table 2. Welding parameters for laser-MIG hybrid welding and MIG welding

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      Table 2. Welding parameters for laser-MIG hybrid welding and MIG welding

      Welding methodWelding speed /（m/min）Arc current /AArc voltage /VLaser power /kWLinear energy /（J/mm）
      Laser-MIG hybrid welding2.0019022.56.8333
      MIG weldingBacking layer0.5720023.0—1080
      Covering layer0.4218522.5—
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    Zhibin Yang, Likang Sheng, Yanqi Xie. Comparative Study on Welding Characteristics of Laser-MIG Hybrid Welding and MIG Welding for Aluminum-Alloy Crossbeam Components of High-Speed Train[J]. Laser & Optoelectronics Progress, 2024, 61(21): 2114009

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    Paper Information

    Category: Lasers and Laser Optics

    Received: Jan. 26, 2024

    Accepted: Mar. 13, 2024

    Published Online: Nov. 18, 2024

    The Author Email: Zhibin Yang (yangzhibin@djtu.edu.cn)

    DOI:10.3788/LOP240622

    CSTR:32186.14.LOP240622

    Topics

    laser devices and laser physics
    Lasers and Laser Optics
    Laser physics
    laser manufacturing
    Instrumentation, Measurement and Metrology