Effect of Friction Stir Welding Parameters on the Microstructure and Mechanical Properties of AA2024-T4 Aluminum Alloy

A. W. El-Morsy, M. Ghanem, H. Bahaitham

Abstract


In this work, the effects of rotational and traverse speeds on the 1.5 mm butt joint performance of friction stir welded 2024-T4 aluminum alloy sheets have been investigated. Five rotational speeds ranging from 560 to 1800 rpm and five traverse speeds ranging from 11 to 45 mm/min have been employed. The characterization of microstructure and the mechanical properties (tensile, microhardness, and bending) of the welded sheets have been studied. The results reveal that by varying the welding parameters, almost sound joints and high performance welded joints can be successfully produced at the rotational speeds of 900 rpm and 700 rpm and the traverse speed of 35 mm/min. The maximum welding performance of joints is found to be 86.3% with 900 rpm rotational speed and 35 mm/min traverse speed. The microhardness values along the cross-section of the joints show a dramatic drop in the stir zone where the lowest value reached is about 63% of the base metal due to the softening of the welded zone caused by the heat input during joining.


Keywords


Friction Stir Welding, Welding Parameters, 2024-T4 Aluminum Alloy, Mechanical Properties

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References


T. Dursun, C. Soutis, “Recent developments in advanced aircraft aluminium alloys”, Materials & Design, Vol. 56, pp. 862–871, 2013

P. Kah, R. Rajan, J. Martikainen, R. Suoranta, “Investigation of weld defects in friction-stir welding and fusion welding of aluminium alloys”, International Journal of Mechanical and Materials Engineering, Vol. 10, No. 1, p. 26, 2015

H. Aydın, A. Bayram, A. Uguz, S. Akay, “Tensile properties of friction stir welded joints of 2024 aluminum alloys in different heat-treated state”, Materials & Design, Vol. 30, pp. 2211–2221, 2009

W. Xu, J. Liu, G. Luan, C. Dong, “Temperature evolution, microstructure and mechanical properties of friction stir welded thick 2219-O aluminum alloy joints”, Materials & Design, Vol. 30, pp. 1886–1893, 2009

P. Cavaliere, R. Nobile, F. Panella, A. Squillace, “Mechanical and microstructural behaviour of 2024–7075 aluminium alloy sheets joined by friction stir welding”, International Journal of Machine Tools and Manufacture, Vol. 46, No. 6, pp. 588–594, 2006

H. Aydın, A. Bayram, I. Durgun, “The effect of post-weld heat treatment on the mechanical properties of 2024-T4 friction stir-welded joints”, Materials & Design, Vol. 31, pp. 2568–2577, 2010

J.-H. Cho, W. J. Kim, C. G. Lee, “Texture and microstructure evolution and mechanical properties during friction stir welding of extruded aluminum billets”, Materials Science and Engineering: A, Vol. 597, pp. 314–323, 2015

L. Karthikeyan, V. S. Senthilkumar, K. A. Padmanabhan, “On the role of process variables in the friction stir processing of cast aluminum A319 alloy”, Materials & Design, Vol. 31, pp. 761–771, 2010

J. Chen, R. Ueji, H. Fuji, “Double-sided friction-stir welding of magnesium alloy with concave-convex tools for texture control”, Materials & Design, Vol. 76, pp. 181–189, 2015

X. Cao, M. Jahazi, “Effect of welding speed on the quality of friction stir welded butt joints of a magnesium alloy”, Materials & Design, Vol. 30, pp. 2033–2042, 2009

S. Ji, Z. Li, Y. Wang, L. Ma, “Joint formation and mechanical properties of back heating assisted friction stir welded Ti–6Al–4V alloy”, Materials & Design, Vol. 113, pp. 37-46, 2017

K. Song, H. Fuji, K. Nakata, “Effect of welding speed on microstructural and mechanical properties of friction stir welded Inconel 600”, Materials & Design, Vol. 30, pp. 3972–3978, 2009

N. Xu, R. Ueji, Y. Morisada, H. Fuji, “Modification of mechanical properties of friction stir welded Cu joint by additional liquid CO2 cooling”, Materials & Design, Vol. 56, pp. 20–25, 2014

H. Li, S. Yang, S. Zhang, B. Zhang, Z. Jiang, H. Feng, P. Han, J. Li, “Microstructure evolution and mechanical properties of friction stir welding super-austenitic stainless steel S32654”, Materials & Design, Vol. 118, pp. 207–217, 2017

M. Hajian, A. Abdollah-zadeh, S. Rezaei-Nejad, H. Assadi, S.M. Hadavi, K. Chung, M. Shokouhimehr, “Microstructure and mechanical properties of friction stir processed AISI 316L stainless steel”, Materials & Design, Vol. 67, pp. 82–94, 2015

P. Avinash, M. Manikandan, N. Arivazhagan, K.D. Ramkumar, S. Narayanan, “Friction Stir Welded Butt Joints of AA2024 T3 and AA7075 T6 Aluminum Alloys”, Procedia Engineering, Vol. 75, pp. 98–102, 2014

M. Ahmed, S. Ataya, M. E. Seleman, H. R. Ammar, E. Ahmed, “Friction stir welding of similar and dissimilar AA7075 and AA5083”, Journal of Materials Processing Technology, Vol. 242, pp. 77–91, 2017

C. Meran, O.E. Canyurt, “The effects of tool rotation speed and traverse speed on friction stir welding of AISI 304 austenitic stainless steel”, International Journal of Materials Research, Vol. 102, No. 4, pp. 420–428, 2011

ASTM E8 / E8M-13, Standard Test Methods for Tension Testing of Metallic Materials, ASTM International, West Conshohocken, PA, 2013

ASTM E190-14, Standard Test Method for Guided Bend Test for Ductility of Welds, ASTM International, West Conshohocken, PA, 2014, www.astm.org

ASTM E290-14, Standard Test Methods for Bend Testing of Material for Ductility, ASTM International, West Conshohocken, PA, 2014, www.astm.org

Y. G. Kim, H. Fuji, T. Tsumura, T. Komazaki, K. Nakata, “Three defect types in friction stir welding of aluminum die casting alloy”, Materials Science and Engineering: A, Vol. 415, pp. 250–254, 2006

K. Elangovan V. Balasubramanian, “Influences of post-weld heat treatment on tensile properties of friction stir-welded AA6061 aluminum alloy joints”, Mater. Charact., Vol. 59, No. 9, pp. 1168-1177, 2008

L. Karthikeyan, V. Senthilkumar, V. Balasubramanian, S. Natarajan, “Mechanical property and microstructural changes during friction stir processing of cast aluminum 2285 alloy”, Materials & Design, Vol. 30, pp. 2237–2242, 2009

R. Palanivel, P. K. Mathews, N. Murugan, I. Dinaharan, “Effect of tool rotational speed and pin profile on microstructure and tensile strength of dissimilar friction stir welded AA5083-H111 and AA6351-T6 aluminum alloys”, Materials & Design, Vol. 40, pp. 7–16, 2012

P. Cavaliere P. P. DeMarco, “Friction stir processing of a Zr-modified 2014 aluminum alloy”, Materials Science and Engineering: A, Vol. 462, pp. 206–210, 2007

M. Azizieh, A. H. Kokabi, P. Abachi, “Effect of rotational speed and probe profile on microstructure and hardness of AZ31/Al2O3 nanocomposites fabricated by friction stir processing”, Materials & Design, Vol. 32, pp. 2034–2041, 2011




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