Influence of Welding Speed on Fracture Toughness of Friction Stir Welded AA2024-T351 Joints
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Faculty of Mechanical Engineering, University of Nis, Aleksandra Medvedeva 14, 18000 Niš, Serbia
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Faculty of Mechanical Engineering, University of Maribor, Smetanova 17, 2000 Maribor, Slovenia
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Military Technical Institute, Ratka Resanovića 1, 11000 Belgrade, Serbia
4
Faculty of Mechanical Engineering, University of East Sarajevo, Vuka Karadžića 30, 71123 East Sarajevo, Bosnia and Herzegovina
*
Author to whom correspondence should be addressed.
Academic Editor: Shinichi Tashiro
Materials 2021, 14(6), 1561; https://doi.org/10.3390/ma14061561
Received: 20 February 2021
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Revised: 14 March 2021
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Accepted: 16 March 2021
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Published: 22 March 2021
(This article belongs to the Special Issue Welding and Joining of Materials for Advanced Aerospace Applications)
In order to ensure a quality welded joint, and thus safe operation and high reliability of the welded part or structure achieved by friction stir welding, it is necessary to select the optimal welding parameters. The parameters of friction stir welding significantly affect the structure of the welded joint, and thus the mechanical properties of the welded joint. Investigation of the influence of friction stir welding parameters was performed on 6-mm thick plates of aluminum alloy AA2024 T351. The quality of the welded joint is predominantly influenced by the tool rotation speed n and the welding speed v. In this research, constant tool rotation speed was adopted n = 750 rpm, and the welding speed was varied (v = 73, 116 and 150 mm/min). By the visual method and radiographic examination, imperfections of the face and roots of the welded specimens were not found. This paper presents the performed experimental tests of the macro and microstructure of welded joints, followed by tests of micro hardness and fracture behavior of Friction Stir Welded AA2024-T351 joints. It can be concluded that the welding speed of v = 116 mm/min is favorable with regard to the fracture behavior of the analysed FSW-joint.
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Keywords:
friction stir welding; process parameters; welding speed; tool rotation speed; AA-2024-T351; fracture toughness
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MDPI and ACS Style
Milčić, M.; Milčić, D.; Vuherer, T.; Radović, L.; Radisavljević, I.; Đurić, A. Influence of Welding Speed on Fracture Toughness of Friction Stir Welded AA2024-T351 Joints. Materials 2021, 14, 1561. https://doi.org/10.3390/ma14061561
AMA Style
Milčić M, Milčić D, Vuherer T, Radović L, Radisavljević I, Đurić A. Influence of Welding Speed on Fracture Toughness of Friction Stir Welded AA2024-T351 Joints. Materials. 2021; 14(6):1561. https://doi.org/10.3390/ma14061561
Chicago/Turabian StyleMilčić, Miodrag, Dragan Milčić, Tomaž Vuherer, Ljubica Radović, Igor Radisavljević, and Aleksija Đurić. 2021. "Influence of Welding Speed on Fracture Toughness of Friction Stir Welded AA2024-T351 Joints" Materials 14, no. 6: 1561. https://doi.org/10.3390/ma14061561
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