Abstract
Joining with friction stir welding (FSW) of high-strength material is challenging work due to high tool wear/degradation and low tool life. Recently, developed tool WC–Co tool materials that withstand high temperatures and torsional stresses are used for welding of high-strength materials with FSW. In this article, friction stir welding (FSW) of Inconel plates is performed with WC–Co tool. The rotational speed of 300 rpm and a traverse speed of 90 mm/min were taken. In microstructural analysis, refinement of grain size of the base material (48 μm) to stir zone (18 μm) was observed, which results in enhancement of mechanical properties such as strength of the welded sample observed 77% of the base material strength, which shows partial welding of Inconel plate occurred and microhardness of the welded sample was 60% harder than base material hardness. FESEM of fractured tensile specimen informed the ductile fracture. Because of the high strength of Inconel alloy, after single weld, significant tool wear was observed. The EDS analysis was carried out at the stir zone of the weld, and it shows the presence of tungsten in the welded region, and also the presence of the Ni, Fe, Cr and Nb elements are found higher peaks in the EDS spectrum.
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References
J.T. Tharappel, J. Babu, Welding processes for Inconel 718-A brief review, in IOP Conference Series: Materials Science and Engineering, vol. 330, No. 1 (IOP Publishing, 2018), p. 012082.
B.G. Muralidharan, V. Shankar, T.P.S. Gill, Weldability of Inconel 718-A Review, No. IGC-175 (Indira Gandhi Centre for Atomic Research, 1996)
K.H. Song, K. Nakata, Microstructural and mechanical properties of friction-stir-welded and post-heat-treated Inconel 718 alloy. J. Alloy. Compd. 505(1), 144–150 (2010)
S. Hanke, G.V.B. Lemos, L. Bergmann, D. Martinazzi, J.F. Dos Santos, T.R. Strohaecker, Degradation mechanisms of pcBN tool material during friction stir welding of Ni-base alloy 625. Wear 376, 403–408 (2017)
M.M.Z. Ahmed, B.P. Wynne, J.P. Martin, Effect of friction stir welding speed on mechanical properties and microstructure of nickel based super alloy Inconel 718. Sci. Technol. Weld. Joining 18(8), 680–687 (2013)
Y.S. Sato, P. Arkom, H. Kokawa, T.W. Nelson, R.J. Steel, Effect of microstructure on properties of friction stir welded Inconel Alloy 600. Mater. Sci. Eng. A 477(1–2), 250–258 (2008)
A. Bansal, A.K. Sharma, S. Das, P. Kumar, On microstructure and strength properties of microwave welded Inconel 718/stainless steel (SS-316L). Proc. Inst. Mech. Eng. Part L J. Mater. Des. Appl. 230(5), 939–948 (2016)
K.D. Ramkumar, W.S. Abraham, V. Viyash, N. Arivazhagan, A.M. Rabel, Investigations on the microstructure, tensile strength and high temperature corrosion behaviour of Inconel 625 and Inconel 718 dissimilar joints. J. Manuf. Processes 25, 306–322 (2017)
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Raj, S., Pankaj, P., Biswas, P. (2021). Microstructure and Mechanical Characterisation of Friction Stir Welded Inconel 718 Alloy. In: Pandey, K., Misra, R., Patowari, P., Dixit, U. (eds) Recent Advances in Mechanical Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-15-7711-6_61
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DOI: https://doi.org/10.1007/978-981-15-7711-6_61
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