Abstract
In this article, Welding of AA2219 aluminium alloy using Gas tungsten arc welding process (GTAW) and evaluation of metallurgical, mechanical and corrosion properties of the joints are discussed. The weld samples were subjected to ageing process at the temperature range of 195°C for a period of 5 h to improve the properties. AA2219 aluminium plates of thickness of 25 mm were welded using gas tungsten arc welding (GTAW) process in double V butt joint configuration. The input parameters considered in this work are welding current, voltage and welding speed. Tensile strength and hardness were measured as performance characteristics. The variation in the properties were justified with the help of microstructures. The same procedures were repeated for post weld heat treated samples and a comparison was made between as weld condition and age treated conditions. The post weld heat samples had better tensile strength and hardness values on comparing with the as weld samples. Fracture surface obtained from the tensile tested specimen revealed ductile mode of failure.
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Banhart, J., Chang, C.S.T., Liang, Z., Wanderka, N., Lay, M.D.H., and Hill, A.J., Adv. Eng. Mater., 2010, vol. 12, pp. 559–571.
Tosto, S., Nenci, F., and Hu, J., Microstructure and properties of electron beam welded and post welded 2219 aluminium alloy, Mater. Sci. Technol., 1996, vol. 12, no. 4, pp. 323–328.
Koreswara Rao, S.R., Madhusudhan Reddy, G., Srinivasa Rao, K., Srinivasa Rao, P., Kamaraj, M., and Prasad, Rao, K., Gas tungsten arc welded AA2219 alloy using scandium containing fillers-mechanical and corrosion behavior, Trans. Ind. Inst. Met., 2004, vol. 57, no. 5, pp. 451–459.
Seshagiri, P.C., Nair, B.S., Reddy, G.M., Rao, K.S., Bhattacharya, S.S., and Rao, K.P., Improvement of mechanical properties of aluminium–copper alloy (AA22219) GTA welds by Sc addition, Sci. Technol. Weld. Join., 2008, vol. 13, no. 2, pp. 146–158.
Malarvizhi, S. and Balasubramanian, V., Effect of welding processes on AA2219 aluminum alloy joint properties, Trans. Nonfer. Met. Soc. China, 2011, vol. 21, pp. 962–973.
Liu, H.J., Chen, Y.C., and Feng, J.C., Effect of zigzag line on the mechanical properties of friction stir welded joints of an Al–Cu alloy, Scripta Mater., 2006, vol. 55, no. 3, pp. 231–234.
Weifeng, Xu., Liu, J., Luan, G., and Don, C., Microstructure and mechanical properties of friction stir welded joints in 2219–T6 aluminum alloy, Mater. Des., 2009, vol. 30, no. 9, pp. 3460–3767.
Bala Srinivasan, P., Arora, K.S., Dietzel, W., Pandy, S., and Schaper, M., Characterization of microstructure, mechanical properties and corrosion behavior of an AA2219 friction stir weldments, J. Alloys Compd., 2010, vol. 492, nos. 1–2, pp. 631–637.
Biju, S. Nair, Phanikumar, G., Prasad Rao, K., and Sinha, P.P., Improvement of mechanical properties of gas tungsten arc and electron beam welded AA2219 (Al‒6 wt % Cu) alloy, Sci. Technol. Weld. Join., 2007, vol. 12, no. 7, pp. 579–585.
Ji-kun Ding, Dong-po Wang, Ying Wang, and Hui Du, Effect of post weld heat treatment on properties of variable polarity TG welded AA2219 aluminum alloy joints, Trans. Nonfer. Met. Soc. China, 2014, vol. 24, pp. 1307–1316.
Bondarev, A.A., Electron beam welding of an Al–Cu–Mn alloy, Avtosvarka, 1974, vol. 2, no. 1, pp. 23–26.
Ma, T., Softening behaviour of Al–Zn–Mg alloys due to welding, Mater. Sci. Eng. A, 1999, vol. 266, no. 1, pp. 198–204.
Rao, S.R., Madhusudhana Reddy, G., Srinivasa Rao, K., Kamaraj, M., and Prasad Rao, K., Reasons for superior mechanical and corrosion properties of 2219 aluminium alloy electron beam welds, Mater. Charact., 2005, vol. 55, nos. 4–5, pp. 345–354.
Malarvizhi, S. and Balasubramanian, V., Influences of welding processes and post weld aging treatment on mechanical and metallurgical properties of AA2219 aluminium alloy joints, Weld. World, 2012, vol. 56, no. 18, pp. 105–119.
Gao, M., Feng, C.R., and Wei, R.P., An analytical electron microscopy study of constituent particles in commercial 7075-T6 and 2024-T3 alloys, Metal. Mater. Trans. A, 1998, vol. 29, no. 2, pp. 1145–1151.
Garland, J.G., Weld pool solidification control, Brit. Weld. J., 1974, vol. 22, pp. 121–127.
Karunakaran, N. and Balasubramanian, V., Effect of pulsed current on temperature distribution, weld bead profiles and characteristics of gas tungsten arc welded aluminium alloy joints, Trans. Nonfer. Met. Soc. China, 2011, vol. 21, pp. 278–286.
Urena, A., Escalera, M. D., and Gil, L., Influence of interface reactions on fracture mechanisms in TIG arcwelded aluminium matrix composites, Compos. Sci. Technol., 2000, vol. 60, no. 4, pp. 613–622.
Kou, S. and Le Y., Dendrite morphology in aluminium alloy welds, Metal. Trans., 1983, vol. 14 A, no. 2, pp. 2243–2249.
Malarvizhi, S., Raghukandan, K., and Viswanathan, N., Effect of post weld heat treatment on fatigue behaviour of electron beam welded AA2219 aluminium alloy, Mater. Des., 2008, vol. 29, nos. 3–4, pp. 1562–1567.
Dieter, G.E., Mechanical Metallurgy, New York: McGraw Hill, 1988.
Standard Test Methods for Tension Testing of Metallic Materials, ASTM E8/E8M-11, ASTM International.
Ber, L.B., Accelerated artificial ageing regimes of commercial aluminum alloys. I. Al–Cu–Mg alloys, Mater. Sci. Eng. A, 2000, vol. 280, pp. 83–90.
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Arunkumar, S., Sathiya, P., Devakumaran, K. et al. Microstructural and Mechanical Characterization of as Weld and Aged Conditions of AA2219 Aluminium Alloy by Gas Tungsten Arc Welding Process. Russ. J. Non-ferrous Metals 59, 93–101 (2018). https://doi.org/10.3103/S1067821218010030
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DOI: https://doi.org/10.3103/S1067821218010030