Abstract
In this study, a relatively new manufacturing process - friction stir welding (FSW) was used to join 3 mm thick AZ91D plates. The process was conducted at a traverse speed of 50 mm/min and rotational speed of 1000 rpm; and the weld sample’s microstructural and mechanical properties were evaluated. The microstructural analysis was conducted with an optical microscope. The mechanical properties evaluation includes tensile and microhardness tests. The microstructural analysis shows a defect-free sound joint of the materials with absence of voids and wormholes. The tensile strength of the weld was enhanced significantly and a joint efficiency of 109% was achieved. However, there was no substantial effect on the ductility and hardness properties of the weld sample. In conclusion, the FSW process is an efficient and sustainable technique to join and enhance the tensile properties of similar AZ91D alloys.
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References
Thomas, W.M., Nicholas, E.D., Needham, J.C., Murch, M.G., Templesmith, P., Dawes C.B.: G.B. Patent Application No. 9125978.8 (1991)
Mishra, R.S., Ma, Z.Y.: Friction stir welding and processing. Mater. Sci. Eng. R. Rep. 50(1–2), 1–78 (2005)
Akinlabi, E.T., Akinlabi, S.A.: Friction stir welding process: a green technology. Int. J. Mech. Aerosp. Indus. Mechatron. Eng. 6(11), 2514–2516 (2012)
Mishra, R.S., De, P.S., Kumar, N.: Friction Stir Processing. In: Friction Stir Welding and Processing, pp. 259--296 Springer, Cham (2014) https://doi.org/10.1007/978-3-319-07043-8_9
Lohwasser, D., Chen, Z.: Friction Stir Welding from Basics to Applications. Woodhead Publishing Limited, Cambridge (2010)
Mohammad, K., Besharati, G., Parviz, A. (2014) Advances in friction stir welding and processing. Woodhead Publishing Series in Welding and Other Joining Technologies.
Mishra, R.S., Mahoney, M.W.: Friction stir welding and processing. ASM International (2007)
Dawes, C., Thomas, W.: Friction stir joining of aluminium alloys. TWI Bull. 6, 124–127 (1995)
Mult, E.H., Haferkamp, H., Niemeyer, M., Dilthey, U., Trager, G.: Laser and electron beam welding of magnesium materials. Weld. Cut. 52(8), 178–180 (2000)
Pastor, M., Zhao, H., DebRoy, T.: Continuous wave Nd: yttrium–aluminium–garnet laser welding of AM60B magnesium alloys. J. Laser Appl. 12(3), 91–100 (2000)
Munitz, A., Cotler, C., Stern, A., Kohn, G.: Mechanical properties and microstructure of gas tungsten arc welded magnesium AZ91D plates. Mater. Sci. Eng. A 302(68–73), 6 (2001)
Jain, C.C., Koo, C.H.: Creep and corrosion properties of the extruded magnesium alloy containing rare earth. Mater. Trans. 2, 265–272 (2007)
Asadi, P., Kazemi-Choobi, K., Elhami, A.: Welding of magnesium alloys. In: New Features on Magnesium Alloys, pp. 121–158 (2012)
Kumar, N., Singh, M.: Effect of different tool pin profile on the mechanical properties of magnesium based alloy AZ91 by friction stir welding. Int. J. Eng. Sci. Res. Technol. 4(10), 25–38 (2015)
Patel, N., Bhatt, K.D., Mehta, V.: Influence of tool pin profile and welding parameter on tensile strength of magnesium alloy AZ91 during FSW. Procedia Technol. 23, 558–565 (2016)
Ramkumar, A., Hadi, Y.: A study of microstructure and mechanical behavior of friction stir welded (FSW) joints of AZ91D magnesium alloy. Am. J. Sci. Res. 108, 37–42 (2016)
Kouadri-Henni, A., Barrallier, L.: Mechanical properties, microstructure and crystallographic texture of magnesium AZ91-D alloy welded by friction stir welding (FSW). Metall. Mater. Trans. A. 45(11), 4983–4996 (2014)
Lee, W.B., Kim, J.W., Yeon, Y.M., Jung, S.B.: The joint characteristics of friction stir welded AZ91D magnesium alloy. Mater. Trans. 44(5), 917–923 (2003)
Standard test methods for tension testing of metallic materials, E8M-13. Copyright ©ASTM International, USA (2013)
Standard test method for microindentation hardness of materials, E384–16. Copyright ©ASTM International, USA (2016)
Tan, J.C., Tan, M.J.: Dynamic continuous recrystallization characteristics in two stage deformation of Mg–3Al–1Zn alloy sheet. Mater. Sci. Eng. A 339(1–2), 124–132 (2003)
Yamashita, A., Horita, Z., Langdon, T.G.: Improving the mechanical properties of magnesium and a magnesium alloy through severe plastic deformation. Mater. Sci. Eng. A 300(1–2), 142–147 (2001)
Alaneme, K.K., Okotete, E.A.: Enhancing plastic deformability of Mg and its alloys – a review of traditional and nascent developments. J. Magnes. Alloy. 5(4), 460–475 (2017)
Wang, H.Y., et al.: Achieving high strength and high ductility in magnesium alloy using hard-plate rolling (HPR) process. Sci. Rep. 5, 17100 (2015)
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The corresponding author acknowledges the funding support of the Global Excellence Stature (GES) scholarship award by the University of Johannesburg, South Africa, and payment of article processing charge by the Pan African University for Life and Earth Sciences Institute Ibadan, Nigeria.
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Kayode, O., Akinlabi, E.T. (2021). Microstructural and Mechanical Properties of Friction Stir Welding of AZ91D. In: Awang, M., Emamian, S.S. (eds) Advances in Material Science and Engineering. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-3641-7_10
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