Friction Stir Welding: A Solid State Joining Process

Alberti, N.; Fratini, Livan

doi:10.1007/3-211-38053-1_7

Cited by 3 publications

(3 citation statements)

References 23 publications

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“…riction Stir Welding (FSW), as a solid-state bonding procedure, is one of the most commonly used techniques to join different materials able to guarantee suitable microstructural and mechanical characteristics, highly competitive in industrial sectors such as automotive and aerospace [1][2][3][4]. The employment of FSW procedure has been increasing through the years and its development has promoted innovations in terms of equipment and research studies.…”

Section: Introductionmentioning

confidence: 99%

Impact behaviour of dissimilar AA2024-T351/7075-T651 FSWed butt-joints: effects of Al2O3-SiC particles addition

Morales

Merlin

Fortini

et al. 2022

Frattura Ed Integrità Strutturale

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Dissimilar friction stir welding joints are widely employed in the industrial field due to the excellent microstructural and mechanical properties of the resulting joints. Nevertheless, to further enhance the weld properties, the addition of reinforcement particles on the joint-line during the process has been proven effective for increasing its mechanical performance. In the present investigation, the microstructure and the impact behaviour of FSWed joints between AA2024-T351 and AA7075-T651 aluminium plates were investigated, considering the effect of different process parameters selected through a full factorial 2k design of experiments: both the rotational and translational speed of the tool, as well as the addition of Al2O3-SiC microparticles, were considered as input parameters. Unnotched 10 x 5 x 55 mm impact specimens were tested through an instrumented 50 J Charpy pendulum: total impact energy, the two complementary initiation and propagation energies as well as the peak force were correlated to the adopted process parameters. From the performed analyses, it was found that joints with reinforcing particles are prone to form wormhole defects across the stir zone that not only affect the microstructural development, but also the impact behaviour since they require less energy at break in comparison with joints fabricated without particles addition.

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Section: Introductionmentioning

confidence: 99%

Impact behaviour of dissimilar AA2024-T351/7075-T651 FSWed butt-joints: effects of Al2O3-SiC particles addition

Morales

Merlin

Fortini

et al. 2022

Frattura Ed Integrità Strutturale

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“…The heat is generated by the friction between two welded components (RFW and LFW) or between components and specially designed tool (FSW). Welding processes are classified as solid-state joining methods because the melting of joined materials does not occur these processes [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the microstructure and different properties of intermetallic phases, such as crack sensitivity, ductility, and corrosion resistance,, are also very important. There are some additional factors, for example, coefficients of thermal expansion of welded materials and their melting temperatures, the knowledge of which is also necessary in the case of joining dissimilar materials [3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Friction Welding of Aluminium and Aluminium Alloys with Steel

Ambroziak

Korzeniowski

Kustroń

et al. 2014

Advances in Materials Science and Engineering

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The paper presents our actual knowledge and experience in joining dissimilar materials with the use of friction welding method. The joints of aluminium and aluminium alloys with the different types of steel were studied. The structural effects occurring during the welding process were described. The mechanical properties using, for example, (i) microhardness measurements, (ii) tensile tests, (iii) bending tests, and (iv) shearing tests were determined. In order to obtain high-quality joints the influence of different configurations of the process such as (i) changing the geometry of bonding surface, (ii) using the interlayer, or (iii) heat treatment was analyzed. Finally, the issues related to the selection of optimal parameters of friction welding process were also investigated.

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The role of thermal contribution in the design of AA2024 friction stir welded butt and lap joints: mechanical properties and energy demand

Campanella

Marcon

Lombardo

et al. 2022

Prod. Eng. Res. Devel.

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Although in recent times the use of solid-state welding processes as Friction Stir Welding (FSW) has become increasingly widespread, for some joint morphologies, as lap joints, there are still significantly less data available on both process parameters optimization and energy consumption. In the present paper, the authors investigated the possibility of enhancing the joint quality in two different configurations, i.e. Lap and Butt joints, taking into account Specific Thermal Contribution (STC) conferred to the weld. Strength, micro-hardness and microstructure were evaluated on the produced AA2024 aluminum alloys butt and lap joints. The Surface Response Method (RSM) was used to investigate the effects of the main process parameters and to identify optimal technological parameters in terms of joint resistance, while the Specific Energy Consumption (SEC) of the entire process was acquired with the aim to provide design guidelines taking into account, at the same time, mechanical performance and environmental impact. It was found that the same optimal range of revolutionary pitch can be identified for both the configurations. Additionally, maximizing welding speed, for a given revolutionary pitch, contributes to significantly reduce the environmental impact of the process with no detrimental effect on the joint performance.

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Friction Stir Welding: A Solid State Joining Process

Cited by 3 publications

References 23 publications

Impact behaviour of dissimilar AA2024-T351/7075-T651 FSWed butt-joints: effects of Al2O3-SiC particles addition

Impact behaviour of dissimilar AA2024-T351/7075-T651 FSWed butt-joints: effects of Al2O3-SiC particles addition

Friction Welding of Aluminium and Aluminium Alloys with Steel

The role of thermal contribution in the design of AA2024 friction stir welded butt and lap joints: mechanical properties and energy demand

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