TWI Digital Library

The CFD (computational fluid dynamics) technique was employed to develop a numerical model of friction stir welding (FSW) of DH36 steel (0.16%C, 1.2%Mn, 0.02%Cr, 0.02%Nb, 0.04%Al, 0.03%Cu) plate (thickness 6 mm) under low and high welding speed cond…

An experimental and numerical analysis of the wear of a polycrystalline boron nitride (PCBN) friction stir welding (FSW) tool is overviewed as presentation slides. Topics highlighted include: FSW plunge trials of EH46 shipbuilding steel at a plunge …

A friction stir welding (FSW) methodology incorporating laser tracking and constant force control technologies was developed in order to fabricate large, thin-walled aircraft floor structures. The material chosen for study comprised sheet specimens …

An experimental investigation was undertaken into the preparation and mechanical properties of two candidate substitutes to MP 159 Ni-Co alloy as tool materials for friction stir welding of high strength aluminium alloys. The alloys studied were "Ae…

In relation to the development of friction stir welding (FSW) technology for railway rolling stock manufacture in China, an investigation is presented into the microstructure and mechanical properties of AA 6005A-T6 aluminium alloy (Al, 0.56%Mg, 0.7…

A series of models was used to study weld formation in 6000-series aluminium alloy in the friction stir welding process. Weld formation was considered as three separate thermomechanical processes: coupled friction heat generation; plastic flow slip …

This paper describes the joining criterion for lap joining of dissimilar metal materials of aluminum and stainless steel by friction stir. A criterion for evaluating the joined state or non-joined state is proposed, which is led by the concept based…

Dissimilar butt and lap joints between AA 5083-H111 or AA 6082-T6 aluminium alloys and copper were fabricated by friction stir welding and morphological, metallographic and structural analyses were undertaken on weldments made under a range of proce…

Defects and their mitigation associated with the fabrication of fluid-cooled aluminium alloy heatsinks for electronic applications are discussed. The heatsink consisted of an aluminium alloy 6063 substrate (310 x 300 mm) with a series of rectangular…

Arcan tests (pure tensile, pure shear and mixed tensile/shear loads) were performed on parent material (6056-T78 aluminium alloy) and friction stir welded (FSW) specimens for comparison purposes and to assess the capability of strain field measureme…

Stationary shoulder friction stir welding (SSFSW) and conventional FSW experiments were undertaken on AA 7050-T7651 alloy plates (thickness 6.3 mm) to demonstrate the advantages of SSFSW with respect to surface finish, thermal profile symmetry, HAZ …

3D fully-coupled thermomechanical models implemented in the ABAQUS finite element code were developed to investigate residual stresses and distortion in friction stir welding (FSW) and three case studies were examined. The temperature field obtained…

The development of friction stir welding (FSW) technology for the Ariane 5 ME heavy launch vehicle project is illustrated with respect to the superior material properties of FSW within the parameter development and the manufacturing of circumferenti…

In this study, the mechanical properties and metallurgical joining interface of aluminum alloy and various strength steel joints by scrubbing refill FSSW (Sc-RFSSW) were investigated. It was shown that Sc-RFSSW provides higher joint strength than co…

The surface quality, microstructure and crystallographic texture were investigated as a function of traverse speed for friction stir welds of Ti-6Al-4V, produced using static shoulder tools consisting of a tungsten-rhenium probe and a silicon nitrid…

The microstructure, static and dynamic fatigue failure properties of friction stir spot welds in advanced high-strength steel were investigated. Welds were made in the overlap configuration in uncoated and galvanised dual-phase DP800 steel (1.25 mm …

The feasibility of friction stir welding TIMETAL 21S beta titanium in the annealed condition was investigated. The composition of the alloy is Ti, 14-16%Mo, 2.4-3.2%Nb, 2.5-3.5%Al, 0.15-0.25%Si, max.0.4%Fe, 0.11-0.17%O, max.0.05%C, max.0.05%N, max.0…

An experimental study was carried out to evaluate the acoustic emission (AE) method as a means of monitoring the welding state and identifying weld defects during the friction stir welding (FSW) process. FSW was carried out on 6061 aluminium alloy p…

A methodology is presented to define conical tool geometry and process parameters for friction stir welding (FSW) of thin plates. A calculation algorithm integrating a basic thermal model, tool geometry and process kinematics is proposed, the proces…

Similar overlap and dissimilar butt joints were fabricated by friction stir spot joining of AA 6061-T6 (Al, 1-1.1%Mg, 0.66-0.67%Si) and AA 5052-H34 (Al, 2.58%Mg) sheets of thickness 1 and 2 mm, respectively, and microstructural analysis was used to …