Investigations on the Effects of the Tool Material, Geometry, and Tilt Angle on Friction Stir Welding of Pure Titanium

Seighalani, Ramin; Givi, Mohammad Kazem Besharati; Nasiri, Ali; Bahemmat, Pouya

doi:10.1007/s11665-009-9582-8

Cited by 71 publications

(43 citation statements)

References 11 publications

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“…2 that are tool geometry, tool rotation speed (ω), welding speed (v), tilt angle and axial force [7][8] their effect on the friction stir welding process are described in following sections. Fig.…”

Section: Process Parametermentioning

confidence: 99%

Emerging Modeling and Simulation Techniques for Friction Stir Welding - A Review

2015

International Conference on Advancements and Recent Innovations in Mechanical, Production and Industrial Engineering

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Abstract-Friction stir welding is a relatively new solid-state joining technique which is widely acceptable in various industries (aerospace, automotive, railway, and shipbuilding) to join similar and dissimilar metallic alloys that are difficult to weld by conventional fusion welding process. In last decade, the friction stir welding processes developments have been active areas research due to dimensional stability of the welded structure, low residual stresses and most important eco-friendly wielding process. The welding mechanism is based on the frictional heat generation process through the interaction of a non-consumable tool to adjoining edges of the plates to be joined. There are a number of issues that affect the performance of friction stir welding such as heat generation, material flow, tool geometry, tool rotation, travel speed, axial force, and tilt angle. Several modeling and simulation techniques have been applied for the characterization of friction stir wielding process phenomenon that are empirical, analytical, numerical and artificial intelligence modeling techniques. The objective of this paper is to review the recent works on modeling and simulation techniques and to emphasize the future requirements for increased understanding of the modeling and simulation efforts in the field of friction stir welding.

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Section: Process Parametermentioning

confidence: 99%

Emerging Modeling and Simulation Techniques for Friction Stir Welding - A Review

2015

International Conference on Advancements and Recent Innovations in Mechanical, Production and Industrial Engineering

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“…The tool shoulder produces a majority of the heating in thin sheet welds, while the pin produces a majority of the heating in thick workpieces. [4] While there have been many studies on FSW in titanium alloys, few of those [5][6][7][8][9][10][11][12][13][14][15] have focused on alpha or near-alpha titanium alloys. Most of those studies have focused on thin section (from 2-to 6.35-mm-thick sheet) welding, where the heat generated by the shoulder can more readily be transferred to the base of the weld during welding.…”

Section: Introductionmentioning

confidence: 99%

Thermal Stir Welds in Titanium

Fonda

Knipling

Pilchak

2015

Metall Mater Trans A

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Although conventional friction stir welding (FSW) has proven unsuccessful in joining thick sections of alpha and near-alpha titanium alloys, thermal stir welding, a variant of the FSW process in which an external heat source is used to preheat the workpiece, is demonstrated to be able to reliably join 12.3-mm-thick plates of CP titanium. This paper describes the microstructures and textures that develop in these thermal stir welds. The observed microstructure was used to reconstruct the high-temperature microstructure and texture present during the welding process and therefore reveal the genesis of the welding structures.

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“…The joining of the material is facilitated by severe plastic deformation, caused by the tool pin without reaching the melting point. Therefore, while FSW provides abundant advantages for joining lightweight alloys in different butt and lap postures [1,2], which are not weldable using conventional techniques, considerable RS are inevitable.…”

Section: Introductionmentioning

confidence: 99%

Effect of cooling media on residual stresses induced by a solid-state welding: underwater FSW

Papahn

Bahemmat

Haghpanahi

2015

Int J Adv Manuf Technol

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In this article, the effect of cooling media on the residual stresses (RS) induced by a solid-state welding process is scrutinized through measuring and comparing RS caused by friction stir welding (FSW) underwater and in open air using the non-destructive ultrasonic method for aluminum AA7075-T6. Underwater FSW as a solid-state welding method can extend the application of solid-state welding techniques in marine industry. Results reveal that the longitudinal and transverse RS reduce under the water compared to open air. This reduction in the longitudinal RS is the maximum within the nugget zone (about 17 %). Meanwhile, such reduction for the transverse RS reaches 70 % within the heat-affected zone. In addition, under both air and water, the longitudinal RS is several times greater than the transverse RS and is in tensile and compressive states inside and outside the nugget zone, respectively.

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Investigations on the Effects of the Tool Material, Geometry, and Tilt Angle on Friction Stir Welding of Pure Titanium

Cited by 71 publications

References 11 publications

Emerging Modeling and Simulation Techniques for Friction Stir Welding - A Review

Emerging Modeling and Simulation Techniques for Friction Stir Welding - A Review

Thermal Stir Welds in Titanium

Effect of cooling media on residual stresses induced by a solid-state welding: underwater FSW

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