Investigations into FSW joints of dissimilar aluminum alloys

Sen, Meghnath; Shankar, Sachindra; Chattopadhyaya, Somnath

doi:10.1016/j.matpr.2019.09.218

Cited by 24 publications

(7 citation statements)

References 9 publications

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“…Results identified the better welding strength by using different input parameters involved in the FSW processes. Sen and Chattopadhyaya (2020) performed FSW on two dissimilar alloys of aluminium that are AA 6061 and AA5086, respectively. In this research work, the mechanical properties of joints have been calculated and further compared with the base metal.…”

Section: Introductionmentioning

confidence: 99%

Experimental analysis of friction stir welded aviation grade AA8090 joints using Taguchi orthogonal array

Panwar

Chandna

2022

AEAT

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Purpose This paper aims to predict the performance of friction stir welded AA8090 joint. Design/methodology/approach In the present study, Al-Li AA8090 plates are butt joined using friction stir welding (FSW). The experiments are designed and optimized using a Taguchi-orthogonal array. The experiments are conducted at three different process parameters, i.e. tool rotational speed (TRS), tool transverse speed (TTS) and dwell time (DT). The ultimate tensile strength (UTS) and microhardness (MH) are considered as response parameters. In addition, a statistical tool (ANOVA) is used to check the adequacy of experiment results. Findings The maximum UTS of 220 MPa is obtained at a TRS of 1,400 rpm, tool TTS of 40 mm/min and DT of 15 s. The maximum microhardness is obtained for 1,400 rpm, 25 mm/min and 8 s, i.e. 108.6 HV. The microstructural showed that the minimum grain is observed at the nugget zone. Fractography analysis revealed the ductile behaviour of fractured surfaces. Originality/value From the reported literature, it has been observed that very limited work is reported on the FSW of AA8090 alloy. Further, the thermal behaviour of welded joint is also observed in this experimental work.

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Section: Introductionmentioning

confidence: 99%

Experimental analysis of friction stir welded aviation grade AA8090 joints using Taguchi orthogonal array

Panwar

Chandna

2022

AEAT

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“…Dissimilar joints are one of these kinds of innovative weld arrangements intended to increase specific mechanical features of a component with the union of the features of two different alloys. Nevertheless, high-quality welds are the result of comprehensive control of the process due to the different features of the different materials, which could lead to inadequate heat generation and material flow, thus affecting the mechanical and microstructural behaviour of the final joint [5][6][7][8][9]. Recently, not only the use of different alloys, but also the introduction of particles across the joint line during the welding procedure, has gained attention since a remarkable increase of the mechanical features of the joint can be achieved.…”

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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“…The rst materials tested using this joining technique, were aluminum alloys [2][3][4][5]; nevertheless, during the last two decades a diversity of materials, including dissimilar materials, have been welded using FSW: wood, polymers, aluminum alloys, cooper, stainless steel, composites and the combination of these materials. This joining technique involves a no-consumable rotating pin that transfers energy by the friction to the two facing or overlapped surfaces [6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Dissimilar Joining of UHWMPE and PP Using Friction Stir Welding (FSW), and Mechanical Properties Evaluation.

MIRANDA¹,

Almaraz

LOPEZ³

et al. 2022

Preprint

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This work presents the results of the Friction Stir Welding (FSW) for two dissimilar thermoplastic polymers: Polypropylene (PP) and ultra-high molecular weight polyethylene (UHMWPE), under butt welding position. The preliminary results show poor welding, consequently, bad mechanical properties; nevertheless, introducing a self-designed and constructed fixed aluminum shoulder and determination of the best FSW parameters, such as advance speed, rotation speed, preheating or no preheating, leads to an improvement on the welding results. Tensile tests for the welded dissimilar specimens PP-UHMWPE, have revealed as high as 80% of welding efficiency in regard the original base materials. Furthermore, measures of microhardness along the welded zone and around were performed; together with the analysis of fracture behavior under tensile tests, in order to deduce the generalities of effect-cause in the improvement of mechanical properties, which are related to the glassy transition temperature of both thermoplastics, the molecular diffusion in liquid state and the process parameters.

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Investigations into FSW joints of dissimilar aluminum alloys

Cited by 24 publications

References 9 publications

Experimental analysis of friction stir welded aviation grade AA8090 joints using Taguchi orthogonal array

Experimental analysis of friction stir welded aviation grade AA8090 joints using Taguchi orthogonal array

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

Dissimilar Joining of UHWMPE and PP Using Friction Stir Welding (FSW), and Mechanical Properties Evaluation.

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