• Chinese Journal of Lasers
  • Vol. 45, Issue 5, 502006 (2018)
Li Haoyue1、2, Tan Caiwang1、2、3、*, Zhang Qiang4, Chen Bo2、3, Song Xiaoguo2、3, Li Liqun1, and Feng Jicai1
Author Affiliations
  • 1[in Chinese]
  • 2[in Chinese]
  • 3[in Chinese]
  • 4[in Chinese]
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    DOI: 10.3788/CJL201845.0502006 Cite this Article Set citation alerts
    Li Haoyue, Tan Caiwang, Zhang Qiang, Chen Bo, Song Xiaoguo, Li Liqun, Feng Jicai. Effect of Heat Source Order on Coupling Mechanism and Mechanical Properties of Joints in Laser-Arc Hybrid Welding of HG785D High-Strength Steels[J]. Chinese Journal of Lasers, 2018, 45(5): 502006 Copy Citation Text show less

    Abstract

    The laser-arc hybrid welding of HG785D high-strength steels is performed and the effects of laser power and wire feeding speed on the hybrid welding process under different heat source orders are investigated. The dynamic behavior of plasma in the hybrid welding process is investigated. The electron temperature and electron density in plasma under different heat source orders are obtained and the coupling mechanism of heat sources in the welding process is disclosed. The results show that, the weld penetration decreases first and then increases with the increase of laser power, and it decreases gradually with the increase of wire feeding speed. Under the laser-leading condition, the plasma possesses a large volume and a high electron temperature, and the weld penetration is large, simultaneously, the tensile strength of joints is high but the plasticity is weak, and the micro-hardness at each area of joints is high, if compared with those under the arc-leading condition.
    Li Haoyue, Tan Caiwang, Zhang Qiang, Chen Bo, Song Xiaoguo, Li Liqun, Feng Jicai. Effect of Heat Source Order on Coupling Mechanism and Mechanical Properties of Joints in Laser-Arc Hybrid Welding of HG785D High-Strength Steels[J]. Chinese Journal of Lasers, 2018, 45(5): 502006
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