TWI Digital Library

A slide style presentation giving a market review of FSW, challenges for FSW users and process enhancements. The development of equipment and methods for floating bobbin tool FSW and stationary shoulder friction stir welding is outlined. Lifetimes o…

Conventional friction stir welding (FSW), hybrid FSW and thermal stir welding were evaluated and compared for the joining of a nickel-based superalloy Haynes 230. Welds were made in Haynes 230 NiCrW alloy (20-24%Cr, 13-15%W, 6.4 mm thickness), an in…

The friction stir spot welding (FSSW) technique was employed to weld low carbon steel, Invar and iron meteorite materials and the microstructure and mechanical properties of the welded joints were compared. FSSW experiments were performed on low car…

To investigate the potential of mechanical tensioning (MT) to reduce residual stresses in friction stir welding (FSW), thereby eliminating buckling, FSW was performed on 2024-T351 aluminium alloy (thickness 3.2 mm) with different tensile stress leve…

With regard to the problem of parameter development for friction stir welding (FSW) of workpieces with 3D joints, a self-tuning algorithm is presented based on the tool-workpiece thermocouple (TWT) method for temperature measurement to facilitate th…

Similar and dissimilar friction stir welds (FSW) were performed between 2014-T6 and 6061-T6 aluminium alloy sheet (4.70 mm thickness). Weld speed of 450 and 90 mm per minute were used to produce welds described as cold and hot welds respectively. Ad…

Friction stir spot welding (FSSW) experiments were undertaken to fabricate dissimilar metal joints between aluminium and light metals such as magnesium and titanium, and the microstructure and mechanical properties of the weldments were investigated…

Tapered probe and parallel probe tools were employed in friction stir welding of thick section AA 6082-T6 aluminium alloy specimens (thickness 38 mm) and the effect of tool geometry on weldment microstructure and crystallographic texture was investi…

Friction stir welding (FSW) experiments were undertaken on commercially pure Ti and Ti-6%Al-4%V plates (thickness 6 mm) by incorporating nickel foil markers of varying thicknesses to reduce forging load, enhance surface finish, eliminate void format…

The effects of friction stir welding (FSW) tool geometry on material flow during the welding of 4 mm aluminium alloys 2024-T51 and 6056-T4 were investigated. Welds were made using three different welding tool pins (conical non-threaded profile, coni…

A description is presented of the self reacting friction stir welding (SR-FSW) process and the specially designed welding head; results are reported from tests determining the mechanical properties of SR-FSW welds in AA-2219 and AA-2195 aluminium al…

An experimental study was carried out to characterise the types of defect which may occur in friction stir welding (FSW) when operating outside the standard processing window and to determine the causes of these defects. Friction stir welds were mad…

Results are presented from tests carried out to determine the mechanical and corrosion properties of friction stir welds in sheets of thickness 4 mm of two aerospace aluminium alloys AA-6056 and AA-6013. The specimens included alloys in the T6 condi…

The Welding of Airframes by Friction Stir (WAFS) project was implemented to increase the adoption of friction stir welding (FSW) for welding airframes in the aerospace industry. The partners in WAFS include all the main airframe manufacturers in Eur…

Friction stir welding developments, equipment, and applications for the joining of aluminium alloys, particularly for automotive applications, are reviewed. Body in white automotive applications include aluminium alloy tailor welded blanks and the m…

Stress corrosion cracking in friction stir welded aluminium alloy joints was investigated using two alternative techniques. Aluminium alloy 7050-T7541 (Al, 5.7-6.7%Zn, 2.0-2.6%Cu, 1.9-2.6%Mg, 0.15%Fe, 0.12%Si) plate of 6.35 mm (0.25 in) thickness wa…

This paper describes the goals and initial progress of the research project titled "qualification of micro friction stir spot welding for cell-internal contacting of large-format battery cells in a battery production environment (μKoBatt)", which…

With regard to inconsistencies in the literature concerning the correlation between friction stir welding (FSW) process inputs and post weld process or material response, an investigation is presented into the primary variables (temperature, cooling…

Dissimilar lap joints between aluminium alloys and various steel grades were fabricated by friction stir welding (FSW), FSW tool wear was measured and a phenomenological law was developed with respect to pin length reduction over weld length to repr…

Friction stir welding experiments were undertaken on 2195-T8 (Al, 3.99%Cu, 1.09%Li) alloy sheets (thickness 5 mm) and the weldability, microstructure and mechanical properties of the fabricated butt joints were investigated. Welding was performed us…