Russian Journal of Non-Ferrous Metals

, Volume 59, Issue 1, pp 93–101 | Cite as

Microstructural and Mechanical Characterization of as Weld and Aged Conditions of AA2219 Aluminium Alloy by Gas Tungsten Arc Welding Process

  • S. Arunkumar
  • P. Sathiya
  • K. Devakumaran
  • S. Ramesh Kumar
Physical Metallurgy and Heat Treatment
  • 9 Downloads

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.

Keywords

AA2219 aluminum alloy GTAW ageing microstructure tensile property hardness fractography 

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References

  1. 1.
    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.CrossRefGoogle Scholar
  2. 2.
    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.CrossRefGoogle Scholar
  3. 3.
    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.Google Scholar
  4. 4.
    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.CrossRefGoogle Scholar
  5. 5.
    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.CrossRefGoogle Scholar
  6. 6.
    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.CrossRefGoogle Scholar
  7. 7.
    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.CrossRefGoogle Scholar
  8. 8.
    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.CrossRefGoogle Scholar
  9. 9.
    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.CrossRefGoogle Scholar
  10. 10.
    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.CrossRefGoogle Scholar
  11. 11.
    Bondarev, A.A., Electron beam welding of an Al–Cu–Mn alloy, Avtosvarka, 1974, vol. 2, no. 1, pp. 23–26.Google Scholar
  12. 12.
    Ma, T., Softening behaviour of Al–Zn–Mg alloys due to welding, Mater. Sci. Eng. A, 1999, vol. 266, no. 1, pp. 198–204.CrossRefGoogle Scholar
  13. 13.
    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.Google Scholar
  14. 14.
    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.CrossRefGoogle Scholar
  15. 15.
    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.CrossRefGoogle Scholar
  16. 16.
    Garland, J.G., Weld pool solidification control, Brit. Weld. J., 1974, vol. 22, pp. 121–127.Google Scholar
  17. 17.
    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.CrossRefGoogle Scholar
  18. 18.
    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.CrossRefGoogle Scholar
  19. 19.
    Kou, S. and Le Y., Dendrite morphology in aluminium alloy welds, Metal. Trans., 1983, vol. 14 A, no. 2, pp. 2243–2249.Google Scholar
  20. 20.
    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.CrossRefGoogle Scholar
  21. 21.
    Dieter, G.E., Mechanical Metallurgy, New York: McGraw Hill, 1988.Google Scholar
  22. 22.
    Standard Test Methods for Tension Testing of Metallic Materials, ASTM E8/E8M-11, ASTM International.Google Scholar
  23. 23.
    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.CrossRefGoogle Scholar

Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  • S. Arunkumar
    • 1
  • P. Sathiya
    • 1
  • K. Devakumaran
    • 2
  • S. Ramesh Kumar
    • 3
  1. 1.Department of Production EngineeringNational Institute of Technology TiruchirappalliTiruchirappalliIndia
  2. 2.Welding Research Institute, BHELTiruchirappalliIndia
  3. 3.School of Mechanical EngineeringSASTRA UniversityThanjavurIndia

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