Investigation of metallurgical characterization and mechanical properties of double-sided friction stir welding of aluminum 6061 T6 alloy

Thakur, Ankit; Sharma, Varun; Bhadauria, Seema

doi:10.1177/09544054221092935

Cited by 13 publications

(7 citation statements)

References 41 publications

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“…The texture intensity is further increased and reached 6 times random in the stir zone of FSWJ4, Figure 11d. All zone of FSWJ4 shows simple shear as a main texture [38–40].…”

Section: Results and The Data Analysismentioning

confidence: 99%

Evolution of microstructure and mechanical characteristics of friction stir welded ultrafine‐grained aluminum alloy 6082

Verma,

Padap

2023

Materialwissenschaft Werkst

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Bulk production of ultrafine‐grained material is in great demand presently. Ultrafine‐grained material can be synthesized using accumulative roll bonding, which is a prominent severe plastic deformation technique to develop such materials in bulk. There are further challenges in the fabrication of ultrafine‐grained material. Friction stir welding is a potential technique to join the ultrafine‐grained material while maintaining its mechanical and microstructural characteristics stability as no fusion is required. The present research work demonstrates the microstructural and mechanical characteristics of various welding zone after friction stir welding of ultrafine‐grained aluminum alloy 6082. The microstructural features were examined using optical microscopy and the electron back‐scattered diffraction technique. The variation in mechanical characteristics was observed using tensile and microhardness tests. The fractography of tensile specimens was studied to identify the mode of failure. The present study demonstrates the viability of friction stir welding to join ultrafine‐grained aluminum alloy 6082 developed by accumulative roll bonding. The ultrafine grain size of 0.52 μm was achieved after four accumulative roll bonding cycles. The microhardness of accumulative roll bonding processed samples and the tensile strength of the weld joint were increased about two times and 1.6 times respectively compared to the annealed sample.

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“…The texture intensity is further increased and reached 6 times random in the stir zone of FSWJ4, Figure 11d. All zone of FSWJ4 shows simple shear as a main texture [38–40].…”

Section: Results and The Data Analysismentioning

confidence: 99%

Evolution of microstructure and mechanical characteristics of friction stir welded ultrafine‐grained aluminum alloy 6082

Verma,

Padap

2023

Materialwissenschaft Werkst

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“…It is well established that the FSW consists of pin-driven and shoulder-driven flow of plasticized material. 25 The upward bent of material, as shown in Region B of Figure 4, indicates that the plasticized material was forced to flow upwards to the shoulder by the extrusion action of the right-hand threaded pin, where the same plasticized material was trapped by the scrolls and then diverted toward the weld center. The material was then pushed back in the downward direction towards the SZ by the shoulder of the tool.…”

Section: Resultsmentioning

confidence: 99%

Influence of forging action on the microstructural and mechanical characteristics of the friction stir welded joints of aluminum alloy with varied joint configurations

Thakur

Ojha

Bhadauria

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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The variation in the forging action during single-side friction stir welding (SS-FSW) and double side friction stir welding (DS-FSW) joining of AA-6061 T6 alloy by friction stir welding (FSW) process was conducted. The microscopic study of the stir zone (SZ) of SS-FSW joint configurations showed that the forging action obtained with a 3° tool tilt angle (TTA) provided better intermixing of material, with significant downward and inclined flow of plasticized material under the shoulder interaction zones. This led to the maximum grain refinement as compared to the forging action obtained with 0° and 2° TTA. For DS-FSW joint, a good interlocking between the material stirred during the first and second pass was observed, which led to maximum joint efficiency, and the elimination of the problem of insufficient root penetration observed during the SS-FSW. The misorientation analysis revealed that the percentage of high angle grain boundaries (HAGBs) significantly increased for DS-FSW joint due to the small thermal gradient along the plate thickness. Moreover, the dominance of B/[Formula: see text] shear texture with sufficient dissimilarity in the crystallographic orientation to the random texture was observed within the SZ of DS-FSW joint.

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“…This method is successfully used in many industries, including aviation, automotive, shipbuilding, spacecraft or railways [2,3]. FSW treatment has great potential for joining similar materials such as aluminum [4,5], copper [6], steel [7] and dissimilar materials such as aluminum and steel [8,9], aluminium and copper [10,11] or aluminium and titanium [12]. In the literature, it can be fi nd also tests of welding of dissimilar alloys with diff erent thicknesses [13].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Brushing on Residual Stress and Surface Roughness of EN AW-2024-T3 Aluminum Alloy Joints Welded Using the FSW Method

Bucior¹,

Kluz²,

Trzepieciński³

et al. 2023

Adv. Sci. Technol. Res. J.

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This article presents the infl uence of the brushing process on residual stress and surface roughness of EN AW-2024-T3 aluminum alloy joints welded using the Friction Stir Welding (FSW) method. Butt joints with thicknesses of 2 mm were brushing with using ceramic brush. The aim of the study was to fi nd optimal parameters of the brushing process, which would signifi cantly improve the functional properties of welded joints. The experiments were carried out in two steps. In the fi rst stage of the research, the feed rate was changed in the range f = 40÷120 mm/min with a constant brushing depth d = 0.5 mm. The roughness decreased from Sa = 5.285 µm for the specimen after welding to Sa = 2.460 µm for the f = 120 mm/min and d = 0.5 mm. The change in the parameters of the brushing process did not have a signifi cant impact on the state of residual stresses. Hence, in the second step, the brushing depth was increased in steps of 0.1 mm. The best properties were obtained for f = 120 mm/min and d = 0.6 mm (variant 6A), where roughness was Sa = 0.443 µm and compressive stresses σ = -118 MPa.

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Investigation of metallurgical characterization and mechanical properties of double-sided friction stir welding of aluminum 6061 T6 alloy

Cited by 13 publications

References 41 publications

Evolution of microstructure and mechanical characteristics of friction stir welded ultrafine‐grained aluminum alloy 6082

Evolution of microstructure and mechanical characteristics of friction stir welded ultrafine‐grained aluminum alloy 6082

Influence of forging action on the microstructural and mechanical characteristics of the friction stir welded joints of aluminum alloy with varied joint configurations

The Effect of Brushing on Residual Stress and Surface Roughness of EN AW-2024-T3 Aluminum Alloy Joints Welded Using the FSW Method

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