Experimental and numerical study of simultaneous cooling with CO2 gas during friction stir welding of Al-5052

Jalili, Nima; Tabrizi, Hassan Basirat; Hosseini, Mir Mehrdad

doi:10.1016/j.jmatprotec.2016.06.019

Cited by 20 publications

(5 citation statements)

References 15 publications

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“…Similarly, processing of specimens at high SD would generate more frictional heat than at low SD. As described in the previous research work (Jalili et al, 2016, Vignesh et al, 2016, Padmanaban et al, 2014, effective recovery and recrystallization (both static and dynamic) occur if the workpiece has a desired level of heat and strain. A high heat input causes coarsening of grains after recovery and recrystallization phenomenon.…”

Section: Inferencementioning

confidence: 94%

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Corrosion and Tribological Characteristics of FSPed Aluminum Alloy AA5052

Kumar

Ramalingam

et al. 2022

Trans. Marit. Sci.

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Friction stir processing (FSP) is a solid-state and effective process for surface modification of aluminium alloys. In this study the AA5052 alloy, widely used in marine applications, has been subjected to FSP. The FSP trials have been carried out by altering the FSP process parameters (tool rotation speed, tool traverse speed, and shoulder diameter). The friction stir processed specimens have been characterised / tested for microstructure, microhardness, sliding wear, immersion corrosion, and electrochemical corrosion. The hybrid polynomial – radial basis function-based models have been developed to determine the relationship between the process parameters and the evaluated properties. Furthermore, the optimum parameters for obtaining high hardness, wear resistance, and corrosion resistance have been determined. Microstructure evaluation in the friction stir processed specimens has shown refinement and uniform dispersion of β particles throughout the α-Al matrix. The results show that the improvement in properties is a result of the homogeneous dispersion of secondary β phase particles in the matrix. Friction stir processing of AA5052 alloy has improved hardness by ~14.5%, wear resistance by ~83%, and corrosion resistance ~87%. The optimum process window for friction stir processing of AA5052 alloy is tool rotation speed between 500 rpm and 900 rpm, tool traverse speed between 10 mm/min and 30 mm/min, and tool shoulder diameter of 18 mm and 21 mm.

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Section: Inferencementioning

confidence: 94%

“…Jalili et al (Jalili et al, 2016) carried out both experimental and numerical studies on the FSP of AA5052 alloy, with a simultaneous cooling system using an impinging jet of CO2 gas. The experimental analysis reveals that the cooling process has reduced the stir-zone distortion and peak temperature by 58% and 34% respectively.…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Tribological Characteristics of FSPed Aluminum Alloy AA5052

Kumar

Ramalingam

et al. 2022

Trans. Marit. Sci.

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“…It can be taken as the initial condition for the steady stage of welding. Most often, the temperature diagrams for this stage obtained by simulations differ drastically from those obtained by experiment [8,22,23]. The reason for this is that the nature of the simulated process implies the neglect of a number of factors that have a significant influence on the final result.…”

Section: Introductionmentioning

confidence: 95%

Finite Element Modeling and Verification of the Plunge Stage in Friction Stir Welding

Draganov,

Gospodinov,

Radev

et al. 2023

MSF

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In the present work, a finite element model of the first stage, plunge, of friction stir welding is considered. The welded parts are flat aluminum 1050 plates. The arbitrary Lagrangian-Eulerian formulation implemented in ABAQUS/Explicit is used. The material model of the welded parts is the Johnson-Cook law, and Coulomb’s law describes the friction between the tool and the weldment. Temperature field during the process is obtained, and the influence of the parameters concerning the algorithmic implementation of the finite element method is established. The simulation results are compared with experimental results obtained for this purpose.

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“…On the research of liquid gas cooling in welding, liquid CO2 cooling and liquid N2 cooling are widely used. The distortion and longitudinal residual stress of weldment can be greatly reduced by liquid CO2 cooling [5]. Murhid et al [6] studied the post-weld mechanical properties of carbon steel friction stir welding and the relationship between the microstructure and the cooling rate, and they pointed out that, compared with natural cooling, rapid cooling with liquid CO2 enhanced the mechanical properties of the welded joints.…”

Section: Introductionmentioning

confidence: 99%

An Advanced Flexible Multiflow Path Fixture Cooling Method for Additive Manufacturing Repair of Aero Blades

et al. 2021

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Currently, how to release the heat accumulated in the molten pool rapidly is the key factor in blade repair. We analyzed the problem of the current cooling method in blade additive manufacturing repair. Based on cooling effect, we proposed an advanced flexible multiflow path fixture cooling method for blade additive manufacturing repair. We created a coupled heat transfer model and deduced the heat transfer law for multiflow path conjugate flexible clamping. We obtained the optimal cooling scheme for flexible multiflow paths through numerical analysis. We built an experimental platform and tested the cooling effect of the fixture prototype by experiment. The results show that compared with the current cooling method, the new cooling method not only can lower the initial temperature of the fixture rapidly and realize the steady-state heat transfer between the fixture and the flow path quickly but can also significantly enhance the ability of fluid to participate in heat transfer in new flow paths, which significantly improves the cooling effect. The research results are of great significance for the improvement of aero blade additive manufacturing repair. INDEX TERMS Cooling method, blade repair, flexible fixture, numerical analysis, heat transfer.

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Experimental and numerical study of simultaneous cooling with CO2 gas during friction stir welding of Al-5052

Cited by 20 publications

References 15 publications

Corrosion and Tribological Characteristics of FSPed Aluminum Alloy AA5052

Corrosion and Tribological Characteristics of FSPed Aluminum Alloy AA5052

Finite Element Modeling and Verification of the Plunge Stage in Friction Stir Welding

An Advanced Flexible Multiflow Path Fixture Cooling Method for Additive Manufacturing Repair of Aero Blades

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