Abstract
For a practical pulse laser beam welding (PLBW) process of metal sheets assembled in butt joint configuration, the precise control of the assembling clearance has been a challenge. The existence of machining burrs and assembly errors will lead to forming severe defects, such as misalignment, welding leakage, and penetrating. In this paper, a pair of Ti6Al4V plates with a 0.2-mm air gap was tested by an improved PLBW process. A three-dimensional multi-phase and multi-physical field coupling model of the Ti6Al4V plate with a reserved air gap was established according to the weld profile, and the dynamic behavior of the keyhole and molten pool was simulated. The transient temperature field, velocity field, keyhole size, and liquid bridge connection were calculated by using different welding heat input parameters. The results showed that the weld profile simulated by the CFD model is in good agreement with the experimental results, and the deviation is between 0.68 and 7.95%. After the laser power reaches the peak value, the metal steam eruption weakens and the obvious Marangoni vortex appears in the molten pool. The simulated keyhole is always in three stages, that is, the keyhole appears and then gradually forms the through-hole. The through-hole keeps oscillating, and finally, the keyhole shrinks and disappears when the laser power drops to zero. With the increase of laser peak power, the keyhole shape becomes more curved, indicating that the keyhole oscillation is enhanced. With the increase in welding speed, the stability of the molten pool is improved, and the area of the liquid bridge rises more regularly.
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References
Fabrizia C, Vittorio A, Gaetano C, Francesco C, Vincenzo S (2013) Investigation and optimization of laser welding of Ti-6Al-4V titanium alloy plates. J Manuf Sci Eng 135(6):061012
Auwal ST, Ramesh S, Yusof F, Manladan SM (2018) A review on laser beam welding of titanium alloys. Int J Adv Manuf Technol 97:1071–1098
Gope DK, Kumar U, Chattopadhyaya S, Mandal S (2018) Experimental investigation of pug cutter embedded TIG welding of Ti-6Al-4V titanium alloy. J Mech Sci Technol 32:2715–2721
Ghaini FM, Hamedi MJ, Torkamany MJ, Sabbaghzadeh J (2007) Weld metal microstructural characteristics in pulsed Nd: YAG laser welding. Scr Mater 56:955–958
Mohid Z, Rafai NH, Ibrahim MR, Rahim EA (2017) Melted zone shapes transformation in titanium alloy welded using pulse wave laser. Mater Sci Forum 882:8–12
Junaid M, Baig MN, Shamir M, Khan FN, Rehman K, Haider J (2016) A comparative study of pulsed laser and pulsed TIG welding of Ti-5Al-2.5Sn titanium alloy sheet. J Mater Process Technol 242:24–38
Gao XL, Zhang LJ, Liu J, Zhang JX (2014) Effects of weld cross-section profiles and microstructure on properties of pulsed Nd: YAG laser welding of Ti6Al4V sheet. Int J Adv Manuf Technol 72:895–903
Kumar U, Patel D, Zaffar Z, Gope DK, Chattopadhyaya S, Das AK, Biswal MK (2018) Experimental and numerical investigation of temperature distribution and analysis of mechanical properties during pulsed Nd-YAG laser welding of thin Ti6Al4V alloy. Mater Sci Eng 377:012158
Aalderink BJ, Pathiraj B, Aarts KM (2010) Seam gap bridging of laser based processes for the welding of aluminum sheets for industrial applications. Int J Adv Manuf Technol 48:143–154
Satyanarayana G, Narayana KL, Nageswara BR, Slobodyan MS, Elkin MA, Kiselev AS (2019) Numerical simulation of the processes of formation of a welded joint with a pulsed ND:YAG laser welding of ZR–1%NB alloy. Thermal Eng 66:210–218
Pang SY, Chen WD, Wang W (2014) A quantitative model of keyhole instability induced porosity in laser welding of titanium alloy. Metall Mater Trans 45:2808–2818
Drobniak P, Otto A, Vázquez RG, Arias RM, Arias JL (2020) Simulation of keyhole laser welding of stainless steel plates with a gap. Procedia CIRP 94:731–736
Hao HC, Gao JQ, Huang HS (2020) Numerical simulation for dynamic behavior of molten pool in tungsten inert gas welding with reserved gap. J Manuf Processes 58:11–18
Katayama S, Kawahito Y (2009) Elucidation of phenomena in high power fiber laser welding, development of prevention procedures of welding defects. Proc SPIE 7195:71951R-R71955
Chang B, Allen C, Blackburn J, Hilton P, Du D (2015) Fluid flow characteristics and porosity behavior in full penetration laser welding of a titanium alloy. Metall Mater Trans B 46:906–918
Lei Z, Wu S, Cao B (2020) Role of thermal fluid dynamics in alloying element distribution and weld porosity in powder feeding-based laser welding of Al alloy. Appl Therm Eng 171:115081
Pang SY, Chen LL, Zhou JX, Yin YJ, Chen T (2011) A three-dimensional sharp interface model for self-consistent keyhole and weld pool dynamics in deep penetration laser welding. J Phys D 44:25301
Chen JC, Ouyang ZP, Du XW, Wei YH (2022) Weld pool dynamics and joining mechanism in pulse wave laser beam welding of Ti-6Al-4V titanium alloy sheets assembled in butt joint with an air gap. Opt Laser Technol 146:107558
Pilliod JE, Puckett EG (2004) Second-order accurate volume-of-fluid algorithms for tracking material interfaces. J Comput Phys 199:465–502
Osher S, Fedkiw R, Piechor K (2004) Level set methods and dynamic implicit surfaces. Appl Mech Rev 57:B15–B15
Sussman M, Smereka P, Osher S (1994) A level set approach for computing solutions to incompressible two-phase flow. J Comput Phys 114:146–159
Qian LG, Wei YH, Xiao F (2018) Coupled THINC and level set method: a conservative interface capturing scheme with high-order surface representations. J Comput Phys 373:284–303
Chen JC, Chen XM, Liu XJ, Wei YH (2022) Numerical investigation on keyhole collapsing and rebuilding behavior during pulsed laser beam welding of Ti6Al4V titanium alloy under various pulse frequencies. Appl Phys A 128:140–155
Yang Z, Tao W, Li L, Chen Y, Shi C (2017) Numerical simulation of heat transfer and fluid flow during double-sided laser beam welding of T-joints for aluminum aircraft fuselage panels. Opt Laser Technol 91:120–129
Li ZX, Rostam K, Panjehpour A, Akbari M, Karimipour A, Rostamis S (2020) Experimental and numerical study of temperature field and molten pool dimensions in dissimilar thickness laser welding of Ti6Al4V alloy. J Manuf Process 49:438–436
Pariona MM, Taques AF, Wojciechowski LA (2018) The Marangoni effect on microstructure properties and morphology of laser-treated Al-Fe alloy with single track by FEM: varying the laser beam velocity. Int J Heat Mass Tran 119:10–19
Chang B, Allen C, Blackburn J, Hilton P, Du D (2015) Fluid flow characteristics and porosity behavior in full penetration laser welding of a titanium alloy. Metall Mater Trans B 46:906–918
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The research is funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) and China Postdoctoral Science Foundation No. 2020M671479.
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Kong, B., Wei, Y., Tang, F. et al. Effect of welding heat input conditions on the dynamic behavior of pulse laser beam welding molten pool for Ti6Al4V thin plate with clearance. Int J Adv Manuf Technol 125, 629–644 (2023). https://doi.org/10.1007/s00170-022-10740-z
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DOI: https://doi.org/10.1007/s00170-022-10740-z