Abstract
The effect of different welding parameters on the mechanical properties and tensile behavior of tungsten inert gas (TIG) welded joints was analyzed. Four different groove angles were chosen, 60°, 70°, 80° and 90°, to ascertain the tendency of microstructure formation and quality of the weld. Mechanical properties were assessed in the terms of Vickers HV1 hardness. Microanalysis of test samples produced using different current 165 A, 180 A, 200 A with same groove angle of 90° was done in fusion, partially melted, and heat affected zone; all the images showed good penetration and clear transition from one to following zone. The transverse tensile tests were accomplished on the welded joints to evaluate influence of welding parameters and groove geometry to the joint tensile strength and its behavior during exploitation. It was verified that the tensile strength of the welds is closely related to the welding parameters. The chosen 180 A welding current ensured highest tensile strength of test samples; the same as proper selection of groove angle (90°) provides good fusion and high quality of major welds. The results revealed that the weld penetration depends on welding current.
Similar content being viewed by others
References
S. Kannan, S. S. Kumaran and L. A. Kumaraswamidhas, An investigation on compression strength analysis of commercial aluminium tube to aluminium 2025 tube plate by using TIG welding process, J. of Alloys and Compounds, 666 (2016) 131–143.
B. Li and Y. F. Shen, The investigation of abnormal particle–coarsening phenomena in friction stir repair weld of 2219–T6 aluminum alloy, Materials & Design, 32 (2011) 5120–5126.
R. Manti, D. K. Dwivedi and A. Agarwal, Pulse TIG welding of two Al–Mg–Si alloys, J. of Materials Engineering and Performance, 17 (2008) 667–673.
Q. Li, A. Wu, Y. Zhao, G. Wang, D. Yan and H. Wu, Fracture behaviour of double–pass TIG welded 2219–T8 aluminum alloy joints under transverse tensile test, Transactions of Nonferrous Metals and Society of China, 25 (2015) 1794–1803.
G. Mathers, The Welding of Aluminum and Its Alloys Cambridge, Woodhead Publishing Ltd, England (2002).
T. Bollinghaus, H. Herold, C. E. Cross and J. C. Lippold, Hot Cracking Phenomena in Welds II, Springer–Verlag, Berlin, Heidelberg (2008).
P. Praveen and P. K. D. V. Yarlagadda, Meeting challenges in welding of aluminium alloys through pulse gas metal arc welding, J. of Materials Processing Technology, 164–165 (2005) 1106–1112.
T. Luijendijk, Welding of dissimilar aluminium alloys, J. of Materials Processing Technology, 103 (2000) 29–35.
M. Tiryakioglu, J. S. Robinson, M. A. Salazar–Guapuriche, Y. Y. Zhao and P. D. Eason, Hardness strength relationships in the aluminium alloy 7010, Materials Science & Engineering A, 631 (2015) 196–200.
M. A. Salazar–Guapuriche, Y. Y. Zhao, A. Pitman and A. Greene, Correlation of strength with hardness and electrical conductivity for aluminium alloy 7010, Material Science Forum, 519–521 (2006) 853–858.
P. Zhang, S. X. Li and Z. F. Zhang, General relationship between strength and hardness, Materials Science & Engineering A, 529 (2011) 62–73.
V. Walter, K. A. Weidenmann and V. Schulze, A comparison of FSW, BHLW and TIG joints for Al–Si–Mg alloy (EN AW–6082T6), Procedia CIRP, 18 (2014) 120–125.
M. I. Costa, D. M. Rodrigues and C. Leitao, Analysis of AA 6082–T6 welds strength mismatch: stress versus hardness relationships, The International J. of Advanced Manufacturing Technology, 79 (2015) 719–727.
P. A. Stathers, A. K. Hellier, R. P. Harrison, M. I. Ripley and J. Norrish, Hardness–tensile property relationships for HAZ in 6061–T651 aluminium, Welding J., 93 (2014) 301–311.
B. Gungor, E. Kaluc, E. Taban and A. Sik, Mechanical and microstructural properties of robotic cold metal transfer (CMT) welded 5083–H111 and 6082–T651 aluminium alloys, Material & Design, 54 (2014) 207–211.
P. Kah, M. Olabode, E. Hiltunen and J. Martikainen, Welding of a 7025 Al–alloy by pulsed MIG welding process, Mechanika, 19 (2013) 96–103.
M. Muzamil, M. Akhtar, M. Samiuddin and M. Mehdi, Effect of heat treatment on impact resistance of AU5GT and AS7G06 aluminum alloys, J. of Mechanical Science and Technology, 30 (10) (2016) 4543–4548.
E. R. I. Fauzi, M. S. Che–Jamil, Z. Samad and P. Muangjunburee, Microstructure analysis and mechanical characteristics of tungsten inert gas and metal inert gas welded AA6082–T6 tubular joint: A comparative study, Transactions of Nonferrous Metals and Society of China, 27 (2017) 17–24.
G. Wang, Q. Li, Y. Li, A. Wu, N. Ma, S. Yan and H. Wu, Effects of weld reinforcement on tensile behavior and mechanical properties of 2219–T87 aluminium alloy TIG welded joints, Transactions of Nonferrous Metals and Society of China, 27 (2017) 10–16.
Q. Li, A. Wu, Y. Zhao, G. Wang, D. Yan and H. Wu, Fracture behaviour of double–pass TIG welded 2219–T8 aluminum alloy joints under transverse tensile test, Transactions of Nonferrous Metals and Society of China, 25 (2015) 1794–1803.
A. Elrefaey and N. G. Ross, Microstructure and mechanical properties of cold metal transfer welding similar and dissimilar aluminium alloys, Acta Metallurgica Sinica (English Letters), 28 (2015) 715–724.
BS EN ISO 9692–3:2001, Welding and allied processes–Recommendations for joint preparation. Part 3: Metal inert gas welding and tungsten inert gas welding of aluminum and its alloys, British Standard Institution, London (2001).
EN ISO 4136:2012, Destructive tests on welds in metallic materials–Transverse tensile test, European Committee for Standardization, Brussels (2012).
A. Kostrivas and J. C. Lippold, A method for studying weld fusion boundary microstructure evolution in aluminium alloys, Welding J., 79 (2000) 1–8.
Y. Hirata, Pulsed arc welding, Welding International, 17 (2003) 98–115.
G. Fu, F. Tian and H. Wang, Studies on softening of heataffected zone of pulsed–current GMA welded Al–Zn–Mg alloy, J. of Materials Processing Technology, 180 (2006) 216–220.
M. A. Mohamed, Y. H. P. Manurung and M. N. Berhan, Model development for mechanical properties and weld quality class of friction stir welding using multi–objective Taguchi method and response surface methodology, J. of Mechanical Science and Technology, 29 (6) (2015) 2323–2331.
L. Zhang, X. Li, Z. Nie, H. Huang and L. Niu, Comparison of microstructure and mechanical properties of TIG and laser welding joints of a new Al–Zn–Mg–Cu alloy, Materials & Design, 92 (2016) 880–887.
M. Stadler, P. Freton and J. J. Gonzalez, Influence of welding parameters on the weld pool dimensions and shape in a TIG configuration, Applied Sciences, 7 (4) 373 (2017) 1–16.
G. Mrowka–Nowotnik, Influence of chemical composition variation and heat treatment on microstructure and mechanical properties of 6xxx alloys, Archives of Materials Science and Engineering, 46 (2010) 98–107.
Author information
Authors and Affiliations
Corresponding author
Additional information
Recommended by Associate Editor Young Whan Park
Saulius Baskutis is an Associate Professor in Production Engineering at Kaunas University of Technology. His principal interests are in welding processes, measurements of mechanical properties of materials, and district heating supply and distribution systems.
Regita Bendikiene has been working in the field of steel surface strengthening by microalloying since 1994. In 1999, she defended her Ph.D. thesis on Digital Metallographic Evaluation of Carbide Phase Morphology. She published more than 60 scientific publications. She attended professional development internships four times in Sweden, France and Estonia, and her short internship is foreseen at Stavanger University in 2019. She is the Chair of Technical Committee of Lithuanian Standards Board; the Member of Mechanical Engineering field Ph.D. committee; the Chairman of International Conference Materials Engineering.
Rights and permissions
About this article
Cite this article
Baskutis, S., Baskutiene, J., Bendikiene, R. et al. Effect of weld parameters on mechanical properties and tensile behavior of tungsten inert gas welded AW6082-T6 aluminium alloy. J Mech Sci Technol 33, 765–772 (2019). https://doi.org/10.1007/s12206-019-0131-6
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12206-019-0131-6