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PANG Bowen, CUI Jiangmei, ZHOU Naixun, KE Wenchao, CHEN Long, AO Sansan, ZENG Zhi. Effect of power distribution on dynamic behavior of molten pool during laser oscillating welding of 5A06 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(3): 23-30. DOI: 10.12073/j.hjxb.20220404001
Citation: PANG Bowen, CUI Jiangmei, ZHOU Naixun, KE Wenchao, CHEN Long, AO Sansan, ZENG Zhi. Effect of power distribution on dynamic behavior of molten pool during laser oscillating welding of 5A06 aluminum alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(3): 23-30. DOI: 10.12073/j.hjxb.20220404001

Effect of power distribution on dynamic behavior of molten pool during laser oscillating welding of 5A06 aluminum alloy

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  • Received Date: April 03, 2022
  • Available Online: March 05, 2023
  • 5A06 aluminum alloy lock butt weld was used as the research object. Based on the laser beam oscillating, a laser power (power distribution) which is distributed along the oscillating path was added to achieve the dynamic control of power relative to the path. The fluid dynamics model of laser oscillating welding process was established by the finite element software FLUENT to research the effect mechanism of laser oscillating and power distribution on weld forming. The weld section morphology, molten pool dynamic behavior and porosity formation process were simulated and compared under two processes of equal power and power distribution. The results show that compared with the equal power weld, the better formed weld is obtained by power distribution and has no defects such as undercut and burn through. Due to the characteristics of power distribution, the average flow rate of molten pool is effectively reduced, the steady flow behavior of molten metal is exhibited, further improve the stability of the keyhole, and smaller depth-to-width ratio keyhole is obtained, effectively reduce the porosity of the weld (0.9%).
  • Guo N, Fu Y L, Wang Y Z, et al. Microstructure and mechanical properties in friction stir welded 5A06 aluminum alloy thick plate[J]. Materials & Design, 2017, 113: 273 − 283.
    Çam G, İpekoğlu G. Recent developments in joining of aluminum alloys[J]. The International Journal of Advanced Manufacturing Technology, 2016, 91: 1851 − 1866.
    Xu J J, Rong Y M, Huang Y, et al. Keyhole-induced porosity formation during laser welding[J]. Journal of Materials Processing Technology, 2018, 252: 720 − 727. doi: 10.1016/j.jmatprotec.2017.10.038
    Wang Z M, Oliveira J P, Zeng Z, et al. Laser beam oscillating welding of 5A06 aluminum alloys: Microstructure, porosity and mechanical properties[J]. Optics and Laser Technology, 2019, 111: 58 − 65. doi: 10.1016/j.optlastec.2018.09.036
    Wu S K, Li Z X, Qi E Y, et al. Impact of Nb on microstructure and properties of oscillating laser-CMT hybrid welding joints of A7204P-T4 aluminum alloy sheets[J]. Science and Technology of Welding & Joining, 2021, 26(4): 273 − 278.
    Pang X B, Dai J H, Chen S, et al. Microstructure and mechanical properties of fiber laser welding of aluminum alloy with beam oscillation[J]. Applied Sciences-Basel, 2019, 23(9): 5096 − 5107. doi: 10.3390/app9235096
    Zhang C, Yan Y, Chen C, et al. Suppressing porosity of a laser keyhole welded Al-6Mg alloy via beam oscillation[J]. Journal of Materials Processing Technology, 2020, 278: 116382 − 116389. doi: 10.1016/j.jmatprotec.2019.116382
    Cho J H, Na S J. Implementation of real-time multiple reflection and Fresnel absorption of laser beam in keyhole[J]. Journal of Physics D-Applied Physics, 2006, 39(24): 5372 − 5378. doi: 10.1088/0022-3727/39/24/039
    Pang S Y, Chen W D, Wang W. A quantitative model of keyhole instability induced porosity in laser welding of titanium alloy[J]. Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science, 2014, 45(6): 2808 − 2818. doi: 10.1007/s11661-014-2231-3
    Li L Q, Peng G C, Wang J M, et al. Numerical and experimental study on keyhole and melt flow dynamics during laser welding of aluminium alloys under subatmospheric pressures[J]. International Journal of Heat and Mass Transfer, 2019, 133: 812 − 826. doi: 10.1016/j.ijheatmasstransfer.2018.12.165
    Ke W C, Bu X Z, Oliveira J P, et al. Modeling and numerical study of keyhole-induced porosity formation in laser beam oscillating welding of 5A06 aluminum alloy[J]. Optics and Laser Technology, 2021, 133: 106540 − 106550. doi: 10.1016/j.optlastec.2020.106540
    Tan Z J, Pang B W, Oliveira J P, et al. Effect of S-curve laser power for power distribution control on laser oscillating welding of 5A06 aluminum alloy[J]. Optics and Laser Technology, 2022, 149: 107909 − 107916. doi: 10.1016/j.optlastec.2022.107909
    Xiao R S, Zhang X Y, Problems and issues in laser beam welding of aluminum-lithium alloys[J]. Journal of Manufacturing Processes, 2014, 16(2): 166–175.
    Wang H, Shi Y, Gong S, et al. Effect of assist gas flow on the gas shielding during laser deep penetration welding[J]. Journal of Materials Processing Technology, 2007, 184(1–3): 379–385.
    Xu G, Li P, Cao Q, et al. Modelling of fluid flow phenomenon in laser + GMAW hybrid welding of aluminum alloy considering three phase coupling and arc plasma shear stress[J]. Optics and Laser Technology, 2018, 100: 244 − 255. doi: 10.1016/j.optlastec.2017.10.009
    Gueyffier D, Li J, Nadim A, et al. Volume-of-fluid interface tracking with smoothed surface stress methods for three-dimensional flows[J]. Journal of Computational Physics, 1999, 152(2): 423 − 456. doi: 10.1006/jcph.1998.6168
    Schepper S C K D, Heynderickx G J, Marin G B. Modeling the evaporation of a hydrocarbon feedstock in the convection section of a steam cracker[J]. Computers & Chemical Engineering, 2009, 33(1): 122 − 132.
    陈彦宾. 现代激光焊接技术[M]. 北京: 科学出版社, 2005.

    Chen Yanbin. Laser Welding Technology[M]. Beijing: Science Press, 2005.
    Liu T T, Mu Z Y, Hu R Z, et al. Sinusoidal oscillating laser welding of 7075 aluminum alloy: Hydrodynamics, porosity formation and optimization[J]. International Journal of Heat and Mass Transfer, 2019, 140: 346 − 358. doi: 10.1016/j.ijheatmasstransfer.2019.05.111
    Chen L, Mi G Y, Zhang X, et al. Effects of sinusoidal oscillating laser beam on weld formation, melt flow and grain structure during aluminum alloys lap welding[J]. Journal of Materials Processing Technology, 2021, 298(12): 117314 − 117328.
    Li S R, Mi G Y, Wang C M. A study on laser beam oscillating welding characteristics for the 5083 aluminum alloy: Morphology, microstructure and mechanical properties[J]. Journal of Manufacturing Processes, 2020, 53: 12 − 20. doi: 10.1016/j.jmapro.2020.01.018
    Li L Q, Gong J F, Xia H B, et al. Influence of scan paths on flow dynamics and weld formations during oscillating laser welding of 5A06 aluminum alloy[J]. Journal of Materials Research and Technology, 2021, 11: 19 − 32.
    Fuhrich T, Berger P, Hügel H. Marangoni effect in laser deep penetration welding of steel[J]. Journal of Laser Applications, 2001, 13(5): 178 − 186. doi: 10.2351/1.1404412
    Shi L, Li X, Jiang L, et al. Numerical study of keyhole-induced porosity suppression mechanism in laser welding with beam oscillation[J]. Science and Technology of Welding & Joining, 2021, 26(5): 349 − 355. doi: 10.1080/13621718.2021.1913562
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