Experimental investigation of fatigue properties of FSW in AA2024-T351

Milčić, Miodrag; Burzić, Zijah; Radisavljević, Igor; Vuherer, Tomaž; Milčić, Dragan; Grabulov, Vencislav

doi:10.1016/j.prostr.2018.12.220

Cited by 13 publications

(4 citation statements)

References 7 publications

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“…Comparing to the advancing side, the retreating side is characterized by the highest heat input, what significantly reduces the strength of this area (especially in precipitate-hardened aluminum alloys) [26]. The heat causes a series of microstructural changes in HAZ including a coarsening of the strengthening phase and grain growth, which decrease the fatigue resistance and make crack propagation easier [27][28][29]. Especially the lowest hardness zone (LHZ), often became the failure location due to its both low hardness and high value of hardness gradient [12,27].…”

Section: Low Cycle Fatigue Properties At E = 03%mentioning

confidence: 99%

The influence of welding parameters on macrostructure and mechanical properties of Sc-modified AA2519-T62 FSW joints

et al. 2020

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In this investigation, a 5 mm thick extrusion of AA2519-T62 alloy has been welded using friction stir welding method. The various sets of process parameters have been involved within the range of 400–1200 rpm tool rotation speed and 100–800 mm/min welding speed. Selected joints have been subjected to the macrostructure analysis, microhardness measurements, tensile and low cycle fatigue testing (at ε = 0.3%), and fractography analysis. It has been stated that imperfection-free macrostructure is obtained for welds produced with lowest welding speed: 100 mm/min and tool rotation speed within the range of 400–800 rpm. The highest joint efficiency (85%) has been obtained for the sample characterized by the presence of voids in the upper part of the stir zone. Considering macrostructure analysis and established mechanical properties of the joints, it may be concluded that the best set of welding parameters for AA2519-T62 is within the range of 600–800 rpm tool rotation speed with welding speed of 100 mm/min for used MX Triflute tool.

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Section: Low Cycle Fatigue Properties At E = 03%mentioning

confidence: 99%

The influence of welding parameters on macrostructure and mechanical properties of Sc-modified AA2519-T62 FSW joints

et al. 2020

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“…Milčić et al [ 38 , 39 ] have investigated the influence of the welding speed on the material microstructure, hardness distribution and Charpy impact toughness of the analyzed FSW-joint. In the subsequent studies [ 40 , 41 ], Milčić et all investigated the fatigue behavior (determination of S- n curves) of the analyzed FSW-joint. Based on these experimental results, the highest fatigue strength was found for the welding speed of 116 mm/min.…”

Section: Introductionmentioning

confidence: 99%

Influence of Welding Speed on Fracture Toughness of Friction Stir Welded AA2024-T351 Joints

Milčić

Vuherer

et al. 2021

Materials

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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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“…An experimental study of fatigue characteristic of friction stir welded AA2024-T351 was carried out by Miodrag Milcic et.al. [13] in 2018. They aimed to investigate the influence of FSW parameters on fatigue crack propagation rate of 6mm AA2024-T351 sheets.…”

Section: Introductionmentioning

confidence: 99%

Defects Formation and Microstructure Characterization of Friction Stir Welded Al 6061 Plates

Ahmadi

Rahmatabadi

Pahlavani

et al. 2021

Materials, Computer Engineering and Education Technology

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Microstructure characterization and defects formation of a joint fabricated by friction stir welding on two plates of Al 6061 were studied. In this study, plates were in the height of 2mm and input parameters were pin profile (square and cylindrical shape), rotating speed (800 and 1600 rpm) and traverse speed (40, 80 and 120 mm/min). Also, some experiments were conducted and the effects of input variables on the microstructure of the samples are studied by using an optical microscope. Based on the results, a sound defect-free weld could be achieved by optimizing the ratio of traverse speed to rotational one, due to the influence of this ratio on the amount of heat generated during the FSW process. It has been also concluded that higher ratios of traverse speed to rotating speed can result in poor welds.

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Experimental investigation of fatigue properties of FSW in AA2024-T351

Cited by 13 publications

References 7 publications

The influence of welding parameters on macrostructure and mechanical properties of Sc-modified AA2519-T62 FSW joints

The influence of welding parameters on macrostructure and mechanical properties of Sc-modified AA2519-T62 FSW joints

Influence of Welding Speed on Fracture Toughness of Friction Stir Welded AA2024-T351 Joints

Defects Formation and Microstructure Characterization of Friction Stir Welded Al 6061 Plates

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