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Transient Three Dimensional FE Modeling for Thermal Analysis of Pulsed Current Gas Tungsten Arc Welding of Aluminum Alloy

Authors: N. Karunakaran, V. Balasubramanian


This paper presents the results of a study aimed at establishing the temperature distribution during the welding of aluminum alloy plates by Pulsed Current Gas Tungsten Arc Welding (PCGTAW) and Constant Current Gas Tungsten Arc Welding (CCGTAW) processes. Pulsing of the GTA welding current influences the dimensions and solidification rate of the fused zone, it also reduces the weld pool volume hence a narrower bead. In this investigation, the base material considered was aluminum alloy AA 6351 T6, which is finding use in aircraft, automobile and high-speed train components. A finite element analysis was carried out using ANSYS, and the results of the FEA were compared with the experimental results. It is evident from the study that the finite element analysis using ANSYS can be effectively used to model PCGTAW process for finding temperature distribution.

Keywords: Finite Element Analysis, Thermal analysis, Aluminum Alloy, gas tungsten arc welding, pulsed current

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[1] Davies CJ and JG Garland. Solidification structures and properties of fusion welds. Int. Mater. Review, Vol 20, (1975), 83-106.
[2] T. Senthil Kumar, V. Balasubramanian, S. Babu and M. Y. Sanavullah, - Effect of pulsed current GTA welding parameters on the fusion zone microstructure of AA6061 aluminum alloy, Metals and Materials International, Vol.13, No.4, (2007): 345-351.
[3] Kou S and Y.Le - Nucleation mechanism and grain refining of weld metal, Welding Journal, Vol 65, (1986), 305s – 313s.
[4] Madhusudhan Reddy G, Gokhale A.A and Prasad Rao K - Optimization of pulse frequency in pulsedcurrent gas tungsten arc welding of aluminium – lithium alloy sheets, Journal of Material Science &Technology, Vol. 14, (1998), 61-66
[5] Potluri N.B, Ghosh P.K, Gupta P.C and Reddy Y.S - Studies on weld metal characteristics and their influences on tensile and fatigue properties of pulsed current GMA welded Al-Zn-Mg alloy, Welding Research Supplement, Vol 75, (1996), 62s-70s.
[6] John Goldak. Aditya Chakravarthi and Malcolm Bibby - A New Finite Element Model for Welding Heat Sources, Metallurgical Transactions B, Vol 15B, (1984), 299.
[7] V. Pavelic, R. Tanbakuchi, O. A. Uyehara, and P. S. Myers: - Experimental and Computed Temperature Histories in Gas Tungsten Arc Welding of Thin Plates, Welding Journal Research Supplement, Vol. 48, (1969), 295s-305s.
[8] R.T.C. Choo, J. Szekely, R.C. Westhoff, On the calculation of the free surface temperature of gas-tungsten-arc weld pools from first principles: Part I. Modeling the welding arc, Metallurgical Transactions B. Vol23, (1992), 357–369.
[9] John Goldak. Malcolm Bibby, J. Moore, R. House, and B. Patel, Computer Modeling of heat flow in welds: Metallurgical Transactions B, Vol 17B, (1986), 587-600
[10] X. Shan, C.M. Davies, T. Wangsdan, N.P. O’Dowd, K.M. Nikbin, Thermo-mechanical modelling of a single-bead-on-plate weld using the finite element method International, Journal of Pressure Vessels and Piping, Vol 86, (2009), 110–121
[11] Afzaal M. Malik , Ejaz M. Qureshi , Naeem Ullah Dar , Iqbal Khan Analysis of circumferentially arc welded thin-walled cylinders to investigatethe residual stress fields Thin-Walled Structures, Vol 46, (2008), 1391– 1401.
[12] Balasubramanian. V, V. Ravisankar and G. Madhusudhan Reddy, "Effect of pulsed current welding on mechanical properties of high strength aluminium alloys”, International Journal of Advanced Manufacturing Technology, Vol.36, (2007), 254-262.
[13] Sadek C, Absi Alfaro, K S Chawla & John Norrish - Computer Based Data Acquisition for welding research and production, Journal of Materials Processing Technology, Vol 53, (1995), 1-13
[14] Peter R.N. Childs "Practical Temperature Measurements” Elsevier Publications. 1998
[15] M. Sunar , B.S. Yilbas , K. Boran - Thermal and stress analysis of a sheet metal in welding, Journal of Materials Processing Technology, Vol 172, (2006), 123–129.
[16] Klobcar. D, J. Tusek, B. Taljat "Finite element modeling of GTA weld surfacing applied to hot-work tooling”, Computational Materials Science 2004 Vol 31, 368–378.
[17] C.V. Goncalves, L.O. Vilarinho, A. Scotti, G. Guimaraes Estimation of heat source and thermal efficiency in GTAW process by using inverse techniques Journal of Materials Processing Technology Vol 172, (2006), 42–51.
[18] Paul Scott, "Selecting a welding frequency” article at 20.04.2010.
[19] Lu, M., Kou, S., Power and current distribution in Gas Tungsten Arcs. Welding Journal, Vol 67(2), (1988), 29s–33s.
[20] W. H. Kim, S. J. Na - Heat and fluid flow in pulsed current GTA weld pool, International Journal of Heat and Mass Transfer ,Vol 41, (1998), 3213-3227
[21] Anuj Chaudhri, Masood Parang , B.E. Nelson Computer simulation and experimental verification of welding in thin steel sheet containment, International Journal of Heat and Mass Transfer, Vol 50, (2007), 4439–4445.
[22] Mohandas T and Madhusudhana Reddy G Effect of frequency of pulsing in gas tungsten arc welding on the microstructure and mechanical properties of titanium alloy welds, Jl. of Mater SciLetters, Vol. 15, (1996), 626-628.
[23] H.G. Fan, Y.W. Shi , S.J. Na - Numerical analysis of the arc in pulsed current gas tungsten arc welding using a boundary-fitted coordinate, Journal of Materials Processing Technology Vol 72, (1997), 437–445.
[24] V. Ravisankar and V. Balasubramanian, Optimising the pulsed TIG welding parameters to refine the fusion zone, Science and Technology of Welding & Joining, Vol.11, No.6, (2006), 112-116.
[25] Komanduri. R and Z.B. Hou "Thermal Analysis of the Arc Welding Process: Part I. General Solutions” Metallurgical and Materials Transactions B, Vol 31B, (2000), 1353-1370
[26] Little G.H., A.G. Kamtekar "The effect of thermal properties and weld efficiency on transient temperatures during welding” Computers and Structures, Vol 68, (1998), 157 -165
[27] Duranton. P, J. Devaux, V. Robin, P. Gilles, J.M. Bergheau "3D modelling of multipass welding of a 316L stainless steel pipe” Journal of Materials Processing Technology Vol 153–154, (2004), 457–463
[28] Andrea Capriccioli, Paolo Frosi "Multipurpose ANSYS FE procedure for welding processes simulation” Fusion Engineering and Design, Vol 84, (2009), 546–553.