The Influence of Weld Microstructure on Mechanical Properties of Alclad AA2024-T3 Friction Spot Welded

Tier, Marco Antônio Durlo; Santos, J.F. dos; Olea, C. W.; Rosendo, Tonilson de Souza; Mazzaferro, Cíntia Cristiane Petry; Mazzaferro, José Antônio Esmerio; Strohaecker, Telmo Roberto; Silva, A.A.M. da; Isakovic, Jonas

doi:10.4271/2008-01-2287

Cited by 22 publications

(13 citation statements)

References 15 publications

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“…In the past decades, welding technologies have grown significantly and contributed to the success of the engineering sectors such as in the joining of aircraft structures. Aluminum alloys have been used intensively in the transportation industry, in order to achieve a high fuel consumption efficiency by reducing weight . Aluminum alloys are known to be difficult to weld using fusion welding such as arc or laser beam welding.…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance optimization of similar thin AA 7075‐T6 sheets produced by refill friction stir spot welding

Yamin

Awang

Suhuddin

et al. 2020

Materialwissenschaft Werkst

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Refill friction stir spot welding was applied to weld similar thin AA 7075-T6 aluminum alloy sheets in a spot-like joint configuration without a keyhole. The welds were produced using a small tool consisting of sleeve and probe with diameters of 6 mm and 4 mm, respectively. Design of experiment was employed to optimize the welding parameters in terms of the cross tensile strength by using Box Behnken Design. Based on analysis of variance, it can be concluded that plunge depth strongly affects the mechanical performance of the weld. Optimal welding parameters in terms of rotational speed, plunge depth and speed are identified to reach a cross tensile strength of up to 660 N.Keywords: Friction stir spot welding / similar weld / thin sheets / small tools / tensile strength Schlüsselwörter: Rühr-Reib-Schweißen / artgleiches Schweißen / dünne Bleche / kleine Werkzeuge / Zugfestigkeit Friction stir spot welding of thin AA 7075-T6 sheets Materialwiss. Werkstofftech. 2020, 51, 830-835

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Section: Introductionmentioning

confidence: 99%

Mechanical performance optimization of similar thin AA 7075‐T6 sheets produced by refill friction stir spot welding

Yamin

Awang

Suhuddin

et al. 2020

Materialwissenschaft Werkst

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“…Friction-based joining is used in the welding of similar materials [1][2][3][4][5]. However, the process is also an attractive option for welding dissimilar materials [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…As a solid state welding process, FSpW offers many advantages, such as the ability to produce both a weld with good mechanical properties and a weld without a keyhole on the surface [3][4][5]. FSpW has been successfully used to join similar welds [3][4][5] and has been used to join dissimilar materials, such as Al and Mg [7]. However, relatively little effort has been made to develop this process, especially in the dissimilar joint configuration.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of friction spot welds of dissimilar AA5754 Al and AZ31 Mg alloys

Suhuddin

Fischer

Kroeff

et al. 2014

Materials Science and Engineering: A

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In the present study, friction spot welding or refill friction stir spot welding was performed to consolidate dissimilar AA5754 Al and AZ31 Mg alloys. The intermetallic compounds of Al 12 Mg 17 and Al 3 Mg 2 were primarily found in the weld, distributed at the interface between the base materials and in the Al top sheet. The distribution of the intermetallic compounds and the interfacial area between the base materials affect the lap shear strength of the weld. It is concluded that the material flow induced by tool movement plays an important role in both the distribution of the intermetallic compounds and the interfacial area between the base materials.

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“…In addition, this process is particularly sensitive to the surface quality of joined elements, hence for aluminum alloys, etching (removal of non-conductive oxides) and ensuring high purity of the welded elements' surface are required. Oxides cause a significant increase in contact resistance and the amount of supplied heat, and as a result, rapid consumption of electrodes [8,9]. Inappropriate welding parameters of RSW may cause the following defects in spot welds: too small a diameter of the weld, lack of penetration, inadequate geometry of the weld, porosity and cracks, and too deep plunging of electrodes in the joined materials [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Corrosion Protection Method on Properties of RSW and RFSSW Lap Joints Applied in Production of Thin-Walled Aerostructures

et al. 2020

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Aluminum structures, and in particular an element of aerostructures, are strongly exposed to the effects of weather conditions. In the case of using new techniques of joining these structural elements, the selection of proper corrosion protection without losing the required properties of the joint may determine its potential application. This paper presents the results of experimental research concerning the influence of corrosion protection on the microstructure and mechanical strength of resistance spot welded (RSW) and refill friction stir spot welded (RFSSW) joints. The tests were carried out on 2024 T3 aluminum alloy, both sides alcladed. For comparison purposes, the following joints were welded: without any protection, with the primer layer, with anodic oxide coating, and with anodic oxide coating plus sealant between the overlapping surface of the welded metal sheet. The samples were visually inspected, and metallographic and mechanical strength examination was conducted. The test results indicate that the application of the protective layers and its type have an impact on the strength of RSW and RFSSW joints. The use of an adhesive or sealant in welded joints provides an increase in the load capacity of the joint.

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The Influence of Weld Microstructure on Mechanical Properties of Alclad AA2024-T3 Friction Spot Welded

Cited by 22 publications

References 15 publications

Mechanical performance optimization of similar thin AA 7075‐T6 sheets produced by refill friction stir spot welding

Mechanical performance optimization of similar thin AA 7075‐T6 sheets produced by refill friction stir spot welding

Microstructure and mechanical properties of friction spot welds of dissimilar AA5754 Al and AZ31 Mg alloys

Effect of Corrosion Protection Method on Properties of RSW and RFSSW Lap Joints Applied in Production of Thin-Walled Aerostructures

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