Experimental Investigation of Microstructure and Mechanical Properties of TIG Welded Aluminium Alloys

Authors

  • R. R. Balasubramanian Students, Mechanical Engg., Jeppiaar institute of Technology, Kunnam, Chennai Author
  • Vijayasarathi P. Asst.Professor, Mechanical Engg., Jeppiaar institute of Technology, Kunnam, Chennai Author
  • T. Venkatamuni Professor, Mechanical Engg., Jeppiaarinstitute of Technology, Kunnam, Chennai Author
  • S. Kannan Asst.Professor, Mechanical Engg., Jeppiaar institute of Technology, Kunnam, Chennai Author

DOI:

https://doi.org/10.53555/nnmce.v2i3.340

Keywords:

Aluminium alloy, TIG welding, Microstructure, Mechanical properties

Abstract

Aluminum and its alloys are used in fabrication because of their low weight, good corrosion resistance, and weldability. Pure aluminum is soft and therefore not suitable for structures, which require strength. The present investigation aims to compare the mechanical properties of non-heat-treatable aluminum alloy AA5083 and heat-treatable aluminum alloy AA5083. Aluminum alloy AA7020 using Tungsten Inert Gas welding. 5556A filler was used to weld AA7020 alloy and 5183A filler for AA5083 alloy. The effect of pulsing mode over conventional mode of the GTA process was also investigated for the AA5083 alloy. In this work, the gas tungsten arc welding process has been selected because it is a low heat input process. A low heat input process has been selected because AA7020 and AA5083 are low melting point materials. The alternating current (AC) power source has been selected because better cleaning action and high heat concentration on the materials can be avoided. Mechanical testing like tensile tests, impact tests, bend tests, and hardness tests have been critically analyzed, and the properties were summarized and correlated with microstructure and SEM fractographs.

References

1. Gadewar, S., Swaminadhan, P., and Harkare, M. (2010), “Experimental investigations of weld characteristics for a single-pass TIG welding with stainless steel,” Journal of Engineering and Technology, Vol. 2, No. 8, pp. 3676-3686.

2. ZHOU, C.—YANG, X.—LUANET, G.: Scripta Materialia, 53, 2005, p. 1187.

3. MATHERS, G.: The Welding of Aluminium and Its Alloys. Cambridge, Woodhead Publishing Limited, 2002.

4. ANDERSON, T.: Welding Journal, 81, 2002, p. 77.

5. ANDERSON, T.: Welding Journal, 83, 2004, p. 28.

6. JOHNSEN, M. R.: Welding Journal, 78, 1999, p. 35.

7. KALLEE, S. W.—DA VENPORT, J.—NICHOLAS, E. D.: Welding Journal, 81, 2002, p. 47.

8. Lee JI, Um KW. A prediction of welding process parameters by prediction of back-bead geometry. J Mater Process Technol, 2000.

9. Raveendra J, Parmar RS. Mathematical models to predict weld bead geometry for flux cored arc welding. Met Construct, 1987.

10. Khanna, O.P. (2006), “A textbook of welding technology,” Dhanpat Rai Publications Ltd., pp. 3

11. Minnick, B., and William, H. (1996), “Gas tungsten arc welding handbook,” Tinley Park, Illinois: Goodheart–Willcox Company, pp. 71-73.

12. Li, L., Liu, Z., and Snow, M. (2006), “Effect of defects on fatigue strength of GTAW repaired cast aluminum alloy,” pp. 1s-6s.

13. Welding Handbook (4th edition), section 2, “Gas, arc, and resistance welding processes,” published by the American Welding Society.

14. Sudhakaran, R., Vel, M., and Sivasakthivel, P. (2012), “Optimization of process parameters to minimize angular distortion in gas tungsten arc welded stainless steel grade plates,” Journal of Engineering Science and Technology, Vol. 7, No. 2, pp. 195–208.

Downloads

Published

2015-03-31

Issue

Vol. 2 No. 3 (2015): Journal of Advance Research in Mechanical & Civil Engineering (ISSN: 2208-2379)

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

You are free to:

  1. Share — copy and redistribute the material in any medium or format for any purpose, even commercially.
  2. Adapt — remix, transform, and build upon the material for any purpose, even commercially.
  3. The licensor cannot revoke these freedoms as long as you follow the license terms.

Under the following terms:

  1. Attribution — You must give appropriate credit , provide a link to the license, and indicate if changes were made . You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  2. No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

Notices:

You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation .

No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

 

How to Cite

Experimental Investigation of Microstructure and Mechanical Properties of TIG Welded Aluminium Alloys. (2015). Journal of Advance Research in Mechanical and Civil Engineering (ISSN: 2208-2379), 2(3), 01-08. https://doi.org/10.53555/nnmce.v2i3.340