Mechanism of pin thread and flat features affecting material thermal flow behaviors and mixing in Al-Cu dissimilar friction stir welding

He, Huan; Liu, Zhaoxian; Zhu, Yalong; Chu, Jiayu; Li, Shihao; Pei, Supeng; Zhang, Chengxiang; Fu, Ao; Zhao, Wen-heng

doi:10.1016/j.ijmecsci.2023.108615

Cited by 19 publications

(6 citation statements)

References 73 publications

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“…The workpiece material experiences significant plastic deformation as a result of the tool's frictional heat generation with the plates during a combination of rotational and translational motion. Due to the presence of flat faces on the FSW pin, a pulsating stirring action is observed at the tool pin/workpiece contact region [ 48 , 49 ]. This leads to more deformation and thermal softening of the material during welding.…”

Section: Resultsmentioning

confidence: 99%

Correlation of microstructure, texture, and mechanical properties of friction stir welded Joints of AA7075-T6 plates using a flat tool pin profile

Kesharwani,

Jha,

Imam

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Correlation of microstructure, texture, and mechanical properties of friction stir welded Joints of AA7075-T6 plates using a flat tool pin profile

Kesharwani,

Jha,

Imam

et al. 2024

Heliyon

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“…The sizes of the welding plates are 200 × 110 × 4 mm, which are exactly the same as the experimental specimens. The thermally physical properties are considered to be functions of temperature for both 2024-T3 and 6061-T6, as shown in The surface heat source model [52] is used to simulate temperature variations in FSW of dissimilar metals. The heat input power is mainly caused by the frictional dissipations between the welding plates and tool:…”

Section: Numerical Modelmentioning

confidence: 99%

“…A thinning of 0.5 mm caused by FSW is considered. The surface heat source model [52] is used to simulate temperature variations in FSW of dissimilar metals. The heat input power is mainly caused by the frictional dissipations between the welding plates and tool:…”

Section: Numerical Modelmentioning

confidence: 99%

Subregion Based Prediction of Residual States in Friction Stir Welding of Dissimilar Metals

Zhang,

Wang,

Liu

et al. 2023

Coatings

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Mechanical property changes in friction stir welding can directly affect the rebalance of the stress field in friction stir welding. This means that it reveals a high relevance with the residual states of friction stir welding. Here, we propose a subregion model in which the mechanical property changes are considered to predict the residual states in friction stir welding of dissimilar metals. Results indicate that the accuracy of the predicted distortion can be greatly increased when the different mechanical properties are considered in friction stir welding of 2024-T3 and 6061-T6. The final mechanical property is determined by the mixture of the materials at retreating and advancing sides. The final mechanical property in the stirring zone can be increased to 171 MPa for yield strength and 194 MPa for tensile strength when the strength of the advancing side material is higher. The shrinkage of material in the stirring zone during the cooling stage is the key reason for the formation of the tensile residual stress and the V-shape distortion on the cross-section in the as-weld state.

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“…22,29,34,36 Among the FSW tools used by researchers, straight the cylindrical pin shaped tool is the most cost-effective and easiest to manufacture. 31,37 Apart from FSW tool, process variables like tool rotational speed, welding speed, tool offset, plate positioning are the key factors which influence the weld quality. 6,38,39 Rotational speed and traverse speed are accountable for heat release during FSW.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and metallurgical characterization of friction stir welded AA2024 to pure copper using specific variables and positioning

Baghel,

Soni

2023

Proceedings of the Institution of Mechanical Engineers, Part C:

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A simple cylindrical pin shaped tool made economically of H13 tool steel was used to butt weld dissimilar metal plates of AA2024 and pure copper with friction stir welding with three different welding arrangements of plate positionings and tool offsets. Plunge depth, tool tilt angle and tool traverse speed remained steady while tool rotation speed varied in every arrangement. Tensile strength testing, microhardness testing, SEM, EDS and fractography were performed to evaluate the impact of plate positioning, tool offset and tool rotational speed on weld quality. The NZ showed swirl and vortex microstructures, and ductile fracture was identified as the cause of rupture in the FSWed samples. The arrangement AA2024 was placed in the advancing side without tool offset at tool rotation speed of 900 rpm demonstrated UTS, YS and microhardness as 198.98 MPa, 153.86 MPa and 251 HV respectively whereas maximum elongation, joint efficiency found 8.39%, 85.54% respectively.

show abstract

Mechanism of pin thread and flat features affecting material thermal flow behaviors and mixing in Al-Cu dissimilar friction stir welding

Cited by 19 publications

References 73 publications

Correlation of microstructure, texture, and mechanical properties of friction stir welded Joints of AA7075-T6 plates using a flat tool pin profile

Correlation of microstructure, texture, and mechanical properties of friction stir welded Joints of AA7075-T6 plates using a flat tool pin profile

Subregion Based Prediction of Residual States in Friction Stir Welding of Dissimilar Metals

Mechanical and metallurgical characterization of friction stir welded AA2024 to pure copper using specific variables and positioning

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