Experimental Fatigue Life Estimation of AA5083 Aluminium Alloys Welded by Two Welding Processes-Gas Metal Arc(GMA) Welding and Friction Stir Welding (FSW)

  • Yatika Gori Department of Mechanical and Automobile Engineering, Graphic Era University, Dehradun, India
  • Rajesh P. Verma Department of Mechanical and Automobile Engineering, Graphic Era University, Dehradun, India
Keywords: Friction Stir Welding (FSW), Gas Metal Arc (GMA) Welding, Fatigue Life, Aluminium Alloys


AA5083 aluminium alloys are widely used in automotive structure and naval structure due to its excellent corrosion resistance and weldibility. All such applications require joining of aluminium alloys in most effective and reliable method to withstand the fatigue failure. The main objective of the present work focuses on the investigation of mechanical properties (tensile strength, percentage of elongation, weld hardness and fatigue life) of AA5083 joint that are fabricated by two most popular welding processes-Friction Stir Welding (FSW) and Gas Metal Arc (GMA) welding. The commercial plates of AA5083 aluminium alloys were used in the study. The tensile properties and weld hardness were evaluated as per ASTMB-557M and ASTM E466 standards. Fatigue test was performed at stress ratio 0.1 with 20Hz frequency. Both welding processes lead to decrease of the material mechanical properties of the joint compared to parent metal. The FSW welding was found more effective to achieve better tensile properties and fatigue properties than GMA welding. Higher fatigue scatter was obtained in GMA welded specimens.


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Branco, C. M., Maddox, S. J., Infante, V., & Gomes, E. C. (1999). Fatigue performance of tungsten inert gas (TIG) and plasma welds in thin sections.International Journal of Fatigue,21(6), 587-601.

Ceschini, L., Boromei, I., Minak, G., Morri, A., & Tarterini, F. (2007). Effect of friction stir welding on microstructure, tensile and fatigue properties of the AA7005/10vol. % Al 2 O 3p composite.Composites Science and Technology, 67(3), 605-615.

Ericsson, M., & Sandström, R. (2003). Influence of welding speed on the fatigue of friction stir welds, and comparison with MIG and TIG.International Journal of Fatigue,25(12), 1379-1387.

Malarvizhi, S., & Balasubramanian, V. (2011). Fatigue crack growth resistance of gas tungsten arc, electron beam and friction stir welded joints of AA2219 aluminium alloy.Materials andDesign,32(3), 1205-1214.

Mishra, R. S., & Ma, Z. Y. (2005). Friction stirwelding and processing.Materials Science and Engineering: R: Reports,50(1), 1-78.

Posinasetti, P., & Yarlagadda, P. K. (2005). Meeting challenges in welding of aluminium alloys through pulse gas metal arc welding.Journal of Materials Processing Technology,164(AMPT/AMME05 Part 2), 1106-1112.

Ravindra, B., Kumar, T. S., & Balasubramanian, V. (2011). Fatigue life prediction of gas metal arc welded crucifrom joints of AA7075 aluminium alloy failing from root region.Transactions of Nonferrous Metals Society of China,21(6), 1210-1217.

Sonsino, C. M., Radaj, D., Brandt, U., & Lehrke, H. P. (1999). Fatigue assessment of welded joints in AlMg 4.5 Mn aluminium alloy (AA 5083) by local approaches.International Journal of Fatigue,21(9), 985-999.

Wang, D. A., & Chen, C. H. (2009). Fatigue lives of friction stir spot welds in aluminum 6061-T6 sheets.Journal of Materials Processing Technology, 209(1), 367-375.