Abstract
The electron beam welding process was used to produce dissimilar butt-joints of AA-6061 to AA-2024 sheets using various welding conditions such as different welding speed, double-side pass, and various oscillating beam patterns (circular, straight-ramp, triangular, and infinity). The joints were subjected to x-ray computed tomographic analysis to visualize and quantify insidious welding defects like porosities and microcracks. Such inspection revealed the presence of porosities in all joints, regardless of their welding conditions. Besides, variation in EBW welding conditions was found to alter the porosity content, size, and distribution. When the welding speed was increased, the porosity content and pore volume fractions were reduced by 30%, while a significant reduction (80–90%) was obtained for the oscillating or double-side pass conditions. In oscillating beam conditions, the triangular pattern was found to be more effective in reducing weld porosities, whereas the infinity pattern was unsuitable for joining aluminum alloys.
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References
Verma RP, Lila MK (2021) A short review on aluminium alloys and welding in structural applications. Mater Today: Proc 46(10):10687–10691
Bunaziv I, Akselsen OM, Ren X, Nyhus B, Eriksson M (2021) Laser beam and laser-arc hybrid welding of aluminium alloys. Metals 11(8):1150
Vigneshwar M, Selvamani ST, Hariprasath P, Palanikumar K (2018) Analysis of mechanical, metallurgical and fatigue behavior of friction welded AA6061-AA2024 dissimilar aluminum alloys in optimized condition. Mater Today: Proc 5:7853–7863
Seto N, Katayama S, Matsunawa A (2001) Porosity formation mechanism and suppression procedure in laser welding of aluminium alloys. Weld Int 15(3):191–202
Yan S, Zhu Z, Ma C, Qin Q, Chen H, Fu YN (2019) Porosity formation and its effect on the properties of hybrid laser welded Al alloy joints. Int J Adv Manufact Technol 104:2645–2656
Liang J, Sha Z, Shi Y (2016) Ultrasonic inspection of small pores within electron beam welded titanium alloys and their influence on the fatigue properties. 19th World Conf Non-Destructive Test 1–9
Xu J, Rong Y, Huang Y, Wang P, Wang C (2018) Keyhole-induced porosity formation during laser welding. J Mater Process Technol 252:720–727
Zhan X, Zhao Y, Liu Z, Gao Q, Bu H (2018) Microstructure and porosity characteristics of 5A06 aluminum alloy joints using laser-MIG hybrid welding. J Manufact Process 35:437–445
Gao XL, Zhang LJ, Liu J, Zhang JX (2014) Porosity and microstructure in pulsed Nd:YAG laser welded Ti6Al4V sheet. J Mater Process Technol 214:1316–1325
Olabode M, Kah P, Martikainen J (2013) Aluminium alloys welding processes: challenges, joint types and process selection. Proc Inst Mech Eng Part B 227(8):1129–1137
Vyskoc M, Sahul M, Sahul M (2018) Effect of shielding gas on the properties of AW 5083 aluminum alloy laser weld joints. J Mater Eng Perform 27:2993–3006
Hou J, Li R, Xu C, Li T, Shi Z (2021) A comparative study on microstructure and properties of pulsed laser welding and continuous laser welding of Al-25Si-4Cu-Mg high silicon aluminum alloy. J Manufact Process 68(A):657–667
Haboudou A, Peyre P, Vannes AB, Peix G (2003) Reduction of porosity content generated during Nd:YAG laser welding of A356 and AA5083 aluminium alloys. Mater Sci Eng A 363:40–52
Wang L, Gao M, Zhang C, Zeng X (2016) Effect of beam oscillating pattern on weld characterization of laser welding of AA6061-T6 aluminum alloy. Mater Design 108:707–717
Schneider A, Avilov V, Gumenyuk A, Rethmeier M (2013) Laser beam welding of aluminum alloys under the influence of an electromagnetic field. Phy Proc 41:4–11
Jiang M, Chen X, Chen Y, Tao W (2020) Mitigation of porosity defects in fiber laser welding under low vacuum. J Mater Process Technol 276:116385
Reisgen U, Olschok S, Jakobs S, Turner C (2016) Laser beam welding under vacuum of high grade materials. Weld World 60(3):403–413
Zhan X, Yu H, Feng X, Pan P, Liu Z (2019) A comparative study on laser beam and electron beam welding of 5A06 aluminum alloy. Mater Res Exp 6(5):056563
Kar J, Mahanty S, Roy SK, Roy GG (2015) Estimation of average spot diameter and bead penetration using process model during electron beam welding of AISI 304 stainless steel. Trans Indian Inst Met 68(5):935–941
Kar J, Roy SK, Roy GG (2016) Effect of beam oscillation on electron beam welding of copper with AISI-304 stainless steel. J Mater Process Technol 233:174–185
Kar J (2021) Effect of beam oscillation on residual stress and corrosion properties of AISI 316L electron beam welds. Metallogr Microstruct Anal 10:652–660
Liu CC, He JS (2014) Numerical prediction of shrinkage defect in aluminum alloy electron beam weld based on Niyama criterion program. Adv Mater Res 1030:130–133
Zhao L, Wang S, Jin Y, Chen Y (2018) Microstructural characterization and mechanical performance of Al–Cu–Li alloy electron beam welded joint. Aerosp Sci Technol 82:61–69
Saresh N, Pillai MG, Mathew J (2007) Investigations into the effects of electron beam welding on thick Ti–6Al–4V titanium alloy. J Mater Process Technol 192:83–88
Kar J, Dinda SK, Roy GG, Roy SK, Srirangam P (2018) X-ray tomography study on porosity in electron beam welded dissimilar copper–304SS joints. Vacuum 149:200–206
Chen G, Liu J, Shu X, Gu H, Zhang B, Feng J (2019) Beam scanning effect on properties optimization of thick-plate 2A12 aluminum alloy electron-beam welding joints. Mater Sci Eng A 744:583–592.27
Nayak LJ, Roy GG (2021) Role of beam oscillation on electron beam welded zircaloy-4 butt joints. Sci Technol Weld Join 26(6):478–486
Babu NK, Raman SGS, Murthy CVS, Reddy GM (2005) Influence of beam oscillation patterns on the structure and mechanical properties of Ti–6Al–4V electron beam weldments. Sci Technol Weld Join 10(5):583–590
Reddy GM, Murthy CVS, Rao KS, Rao KP (2009) Improvement of mechanical properties of Inconel 718 electron beam welds—influence of welding techniques and postweld heat treatment. Int J Adv Manufact Technol 43:671–680
Ke W, Bu X, Oliveira JP, Xu WG, Wang Z, Zeng Z (2021) Modeling and numerical study of keyhole-induced porosity formation in laser beam oscillating welding of 5A06 aluminum alloy. Opt Laser Technol 133:106540
Li S, Mi G, Wang C (2020) A study on laser beam oscillating welding characteristics for the 5083 aluminum alloy: morphology, microstructure and mechanical properties. J Manufact Process 53:12–20
Wang Z, Oliveira JP, Zeng Z, Bu X, Peng B, Shao X (2019) Laser beam oscillating welding of 5A06 aluminum alloys: microstructure, porosity and mechanical properties. Opt Laser Technol 111:58–65
Kaplan AFH, Powell J (2011) Spatter in laser welding. J Laser Appl 23(3):032005
Zhang D, Li C, Liu X, Cao Y, Wu D (2018) Numerical study of spatter formation during fiber laser welding of aluminum alloy. J Manufact Process 31:72–79
Wu D, Hua X, Li F, Huang L (2017) Understanding of spatter formation in fiber laser welding of 5083 aluminum alloy. Int J Heat Mass Transf 113:730–740
Kar J, Roy SK, Roy GG (2018) Influence of beam oscillation in electron beam welding of Ti-6AL-4V. Int J Adv Manufact Technol 94(9):4531–4541
Huang L, Hua X, Wu D, Ye Y (2019) Role of welding speed on keyhole-induced porosity formation based on experimental and numerical study in fiber laser welding of Al alloy. Int J Adv Manufact Technol 103:913–925
Kang Y, Zhan X, Liu T (2019) Effect of welding parameters on porosity distribution of dual laser beam bilateral synchronous welding in 2219 aluminum alloy Tjoint. J Adhes Sci Technol 33(23):2595–2614
Dinda SK, Warnett JM, Williams MA, Roy GG, Srirangam P (2016) 3D imaging and quantification of porosity in electron beam welded dissimilar steel to Fe-Al alloy joints by X-ray tomography. Mater Design 96:224–231
Ma J, Harooni M, Carlson B, Kovacevic R (2014) Dissimilar joining of galvanized high-strength steel to aluminum alloy in a zero-gap lap joint configuration by two-pass laser welding. MaterDesign 58:390–401
Kar J, Chakrabarti D, Roy SK, Roy GG (2019) Beam oscillation, porosity formation and fatigue properties of electron beam welded Ti-6Al-4V alloy. J Mater Process Technol 266:165–172
Chen G, Wang B, Mao S, Zhong P, He J (2019) Research on the “∞”-shaped laser scanning welding process for aluminum alloy. Opt Laser Technol 115:32–41
Huang L, Hua X, Wu D, Fang L, Cai Y, Ye Y (2018) Effect of magnesium content on keyhole-induced porosity formation and distribution in aluminum alloys laser welding. J Manufact Process 33:43–53
Zhou L, Zhang M, Jin X, Zhang H, Mao C (2017) Study on the burning loss of magnesium in fiber laser welding of an Al-Mg alloy by optical emission spectroscopy. Int J Adv Manufact Technol 88(5-8):1373–1381
Pengfei F, Zhiyong M, Congjin Z, Yajun W, Chunming W (2014) Microstructures and fatigue properties of electron beam welds with beam oscillation for heavy section TC4-DT alloy. Chinese J Aeronaut 27(4):1015–1021
Nayak LJ, Roy GG (2021) Effect of heat input on microstructure, mechanical and corrosion properties of electron beam welded zircaloy-4 sheets. Weld World 65:987–1005
Mohandas T, Banerjee D, Rao VVK (1999) Fusion zone microstructure and porosity in electron beam welds of an α+β titanium alloy. Metall Mater Trans A 30A:789–798
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This study received financial support from the Department of Science and Technology (DST/INSPIRE/04/2018/001130) of Government India.
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Kar, J. Effect of process parameters on porosities in electron beam welded AA-6061 to AA-2024 dissimilar joints. Weld World 67, 2007–2016 (2023). https://doi.org/10.1007/s40194-023-01549-9
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DOI: https://doi.org/10.1007/s40194-023-01549-9