Friction Stir Welding of three dissimilar aluminium alloy: AA2024, AA6061 and AA7075

Boşneag, Ana; Constantin, Marius Adrian; Niţu, Eduard; Iordache, Monica

doi:10.1088/1757-899x/400/2/022013

Cited by 7 publications

(4 citation statements)

References 1 publication

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“…In recent years, this type of innovative welding technique is used for several applications such as construction, general transportation, aerospace and also in fabrication industries. 1–4 In the FSW procedure, the joining of similar and dissimilar materials takes place over the movement of a rotating shouldered tool with described pin plunged into the weld joint between two pieces of sheet or plate material. When the revolving shoulder pin tool moves along the weld line, the material is heated up by friction in between the shoulder and the surface of the workpiece to be welded.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation and optimization of mechanical properties on combination of higher and lower strength of aluminum alloys

Ganesan¹,

Manonmani

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Friction stir welding is a high potential technology for joining similar and dissimilar aluminum materials, utilized extensively in aerospace and automotive industrial applications to eradicate the problems like hot cracking, porosity, element loss, etc. due to the fusion welding process. This Research addresses the joining of two dissimilar materials of AA 5754 – H32 and AA 8090T6511 – Al-Li and their mechanical properties analysis with the effects of friction stir welding process parameters like tool rotational speed, welding speed and axial load on weld nugget zone formation quality. The significant roles of different tool pin profiles are also emphasized. A mathematical modeling equation was formed by using regression analysis to optimize the process parameter and found the best tool pin profile for defect-free weld nugget zone and higher tensile and hardness properties. This research also portrays the contribution of various pin profiles and each process parameter on the ultimate tensile strength by response surface methodology. The results indicate that the defect-free weld joints are observed with 1800 r/min of rotational speed, welding speed of 15 mm min−1 and 8.5 kN of axial load with hexagonal pin profile.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation and optimization of mechanical properties on combination of higher and lower strength of aluminum alloys

Ganesan¹,

Manonmani

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…Manuel et al [ 12 ] also stated that for T-joints between AA6082 and AA5083, material flow and defect formation are greatly influenced by the joint type, tool geometry, and process parameters, as well as the materials’ properties. The investigations found in the literature about three dissimilar aluminum alloys only concern lap joints [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

“…The flow of material in this zone depends on the tool's geometry, the tool's rotation speed and welding speed, the tool's axial force or displacement, and even the tool's tilt angle, whether in similar or dissimilar material welds [3,4]. Fratini et al [5], when comparing similar welds for the AA6082-T6 and AA2024-T4 alloys Materials 2020, 13, 2664 2 of 17 in a T-joint configuration, concluded that the temperature fields and strain rate influence the flow of a material in the stir zone and, hence, the integrity of welds.…”

Section: Introductionmentioning

confidence: 99%

Nugget Formation and Mechanical Behaviour of Friction Stir Welds of Three Dissimilar Aluminum Alloys

et al. 2020

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The aim of this research was to investigate the influence of the properties of the base materials and welding speed on the morphology and mechanical behavior of the friction stir welds of three dissimilar aluminum alloys in a T-joint configuration. The base materials were the AA2017-T4, AA5083-H111, and AA6082-T6 alloys in 3 mm-thick sheets. The AA6082-T6 alloy was the stringer, and the other alloys were located either on the advancing or retreating sides of the skin. All the T-joint welds were produced with a constant tool rotation speed but with different welding speeds. The microstructures of the welds were analyzed using optical microscopy, scanning electron microscopy with energy dispersive spectroscopy, and the electron backscatter diffraction technique. The mechanical properties were assessed according to micro-hardness, tensile, and fatigue testing. Good quality welds of the three dissimilar aluminum alloys could be achieved with friction stir welding, but a high ratio between the tool’s rotational and traverse speeds was required. The welding speed influenced the weld morphology and fatigue strength. The positioning of the skin materials influenced the nugget morphology and the mechanical behavior of the joints. The joints in which the AA2017 alloy was positioned on the advancing side presented the best tensile properties and fatigue strength.

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“…When there are high levels of thermal stress and solidification of shrinkage during the welding process, Aluminium is susceptible to Solidification cracking or hot cracking can be found out. FSW has several benefits in the welding process which can be listed: FSW does not need a joint preparation for plates, the result is high-quality welding with increased tensile strength, expectation fatigue and corrosion resistance [2]. In order to improve material mechanical properties, combining with various alloying elements shows high performance, and heat treatable alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Friction Stir Welding Tool on Al–SiC Composites by Varying Tool Pin Profile and Tool Material

Jayaseelan

Christy

Vijay

2020

Lecture Notes in Mechanical Engineering

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Efficient joints can be accomplished through the friction stir welding (FSW) process with the selection of appropriate tool profile, tool material and D/d ratio. This experiment to weld Aluminium 6061 with 10% silicon carbide reinforcement was carried out in a CNC FSW machining setup , the tool materials being H13 and OHNS, the tool profiles plain pentagon, plain taper and threaded cylinder and the D/d ratio, a common 2. The different welding parameters chosen were 1000 rpm tool rotation speed and 25 mm/min travel speed with an axial load varying between 3.8 and 4.3 kN. The joint produced with the threaded cylinder tool, compared with the rest of the tools, exhibited the maximum tensile strength of 150 MPa and hardness of 41 HRC and was found to be defect-free with a uniform grain size distribution.

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Friction Stir Welding of three dissimilar aluminium alloy: AA2024, AA6061 and AA7075

Cited by 7 publications

References 1 publication

Experimental investigation and optimization of mechanical properties on combination of higher and lower strength of aluminum alloys

Experimental investigation and optimization of mechanical properties on combination of higher and lower strength of aluminum alloys

Nugget Formation and Mechanical Behaviour of Friction Stir Welds of Three Dissimilar Aluminum Alloys

Effect of Friction Stir Welding Tool on Al–SiC Composites by Varying Tool Pin Profile and Tool Material

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