Interfacial Microstructure Analysis of AA2024 Welded Joints by Friction Stir Welding

Rajkumar, T.; Raja, K.; Lingadurai, K.; Sivaprakash, V.; Antony, A. Godwin

doi:10.14447/jnmes.v23i2.a09

Cited by 8 publications

(6 citation statements)

References 24 publications

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“…1, as they were optimised in a previous work [8]. As regards the process parameters, it was identified from a literature review a range of acceptable values to be considered for FSW welding of an AA2024 joint [9]- [13]. The chosen parameters are reported in Tab.…”

Section: Methodsmentioning

confidence: 99%

Preliminary study of the mechanical characteristics implementation of friction stir welded AA2024 joints by adding pure copper

Bocchi

2023

Materials Research Proceedings

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Abstract. In the present paper, the mechanical properties of a AA2024 welded by Friction Stir Welding (FSW) were examined, both homogeneously and using a commercial pure copper sheet positioned between the edges to be welded in two configurations, T and C. The temperature trends reached during the FSW process were extrapolated through the development of a simulative model, to select the best combination of parameters to use in the experimental phase of the campaign. After that, the FSWed homogeneous and heterogeneous joints were executed and analysed. From the mechanical point of view, Rockwell B hardness tests and tensile tests were performed. It was possible to evidence a good relationship between the hardness distribution and the presence of the copper, especially at the nugget. On the contrary, the tensile tests executed orthogonally to the welding direction, showed a reduction of the tensile strength and of the real elongation percentage in the aluminium-copper heterogeneous FSWed joints.

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Section: Methodsmentioning

confidence: 99%

Preliminary study of the mechanical characteristics implementation of friction stir welded AA2024 joints by adding pure copper

Bocchi

2023

Materials Research Proceedings

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“…e distinct zones in microstructure of the welded samples are studied using metallographic inspection of transverse cross sections [34][35][36][37]. Due to differences in grain size and orientation, various microstructural zones listed as stir zone (SZ), heat-affected zone (HAZ), and thermo-mechanically affected zone (TMAZ) of comparable FS welded joints have been found using scanning electron microscopy (SEM).…”

Section: Metallographic Observationsmentioning

confidence: 99%

Experimental Investigation of AA6063 Welded Joints Using FSW

Rajkumar¹,

Radhakrishnan²,

Rajaganapathy³

et al. 2022

Advances in Materials Science and Engineering

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The AA6063 aluminium alloy has gained widespread use in manufacturing the light-weighted structures which requires a high strength to weight ratio, and it possesses an excellent corrosive resistance in T6 heat-treated (solution heat treated and artificially aged) condition. The process of friction stir welding (FSW) is an emerging joining process of solid state that does not melt and recast the material being welded, as opposed in various other fusion welding processes, which are extensively utilized for combining the structural alloys of aluminium. The process of connecting separate components with external heat has resulted in induced stress on metals. The stir welding using friction was introduced in order to reduce the formation in residual stress during the joining process. The aluminium alloy AA6063 plates were fused utilising the friction stir welding procedure in this study. The studies were carried out using various combinations of speed in rotary condition, speed in transverse condition, and stress in axial condition. The generated joints that are welded was analysed mechanically and microstructurally. The maximum hardness of the mechanical joints produced is 93.25 HV, and the maximum tensile strength is 286.15 N/mm2. According to the results of the response surface analysis, transverse and rotary velocities possess a notable impact in hardness and durability, respectively.

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“…This will lead to the formation joint at interface of two metal plates. The effect of friction is adjusted by the load applied on the tool [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of welding process parameters on surface topography and mechanical properties of friction-stir-welded AA2024/AA2099 alloys

Rajkumar¹,

Singh²,

Anbarasan

et al. 2023

Mater. Res. Express

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The joining of two material with different chemical composition was a major setback for conventional methods of metal joining. The results of this welding were showing considerably great improvement in the aspects of quality of weld, amount of heat generated, uniform distribution of material, refined microstructure, enhanced tribology, materials flowing pattern, good strength with reduced internal stresses. Optimized parameters were estimated by using Desirabilty approach and Response surface methodology. Optimum parameter combination for dissimilar material welding was observed to be 913.74 rpm, 45 mm/min and 8kN. The desirability values for dissimilar welding process were 0.912 respectively. The grain enhancements were decreased in the range of WC> WT> HAZ> Parent material. The wear rate of dissimilar AA2024 and AA2099 were superior as the wear value increases from 0 to 50μm in the nugget zone. The coefficient of friction value remains constant throughout the wear experiment ranges from 0.3 to 0.55. Steady state friction values of 3N to 5N is observed when sliding distance increases. The wear loss was measured by finding the difference between initial weight and final weight and found as in the range from 0.2283 g to 0.4866 g.

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Interfacial Microstructure Analysis of AA2024 Welded Joints by Friction Stir Welding

Cited by 8 publications

References 24 publications

Preliminary study of the mechanical characteristics implementation of friction stir welded AA2024 joints by adding pure copper

Preliminary study of the mechanical characteristics implementation of friction stir welded AA2024 joints by adding pure copper

Experimental Investigation of AA6063 Welded Joints Using FSW

Effect of welding process parameters on surface topography and mechanical properties of friction-stir-welded AA2024/AA2099 alloys

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