TWI Digital Library

The incorporation of strips of copper foil in friction stir welded aluminium alloy plate was evaluated for flow visualisation without disturbing the welding process. The strips, of 0.1 mm thickness, were placed in various longitudinal and transverse…

Aluminium alloy fusion welds were modified by friction stir processing (FSP) as a function of FSP location and tool design, and differences between the FSP locations and tools were quantified by microstructure and mechanical property measurements (u…

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…

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…

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…

The use of friction stir welding in aircraft manufacture, particularly the Airbus, both as an alternative to riveting and for the production of tailored blanks, is discussed. Potential benefits include cost and weight reduction. The European aircraf…

A refill friction stir spot welding (RFSSW) process with a short welding cycle time was employed to fabricate welded joints in thin gauge AA 6111-T4 aluminium alloy sheets (thickness 0.9 mm) and the mechanical properties of the joints were investiga…

An investigation is presented into the development of the stationary shoulder self-reacting pin tool (SSSRPT) as a friction stir welding variant and the application of the tool to fabrication of butt joints in sheets (thickness 4 mm) of A6N01 alloys…

The fatigue performance of friction stir welded butt joints in 2024-T3 aluminium alloy plate (thickness 6.35 mm) was investigated by adopting six different tool designs and using a design of experiments analysis over a wide range of process paramete…

A coupled Eulerian-Lagrangian approach with Abaqus v.6.14 finite element software was employed to model the whole friction stir welding (FSW) process within one continuous model and results for temperature fields, surfaces, weld formation and proces…

A techno-economic assessment study was undertaken with respect to the feasibility of the friction stir welding (FSW) technique for microalloyed DH36 grade shipbuilding steel (0.11%C, 1.48%Mn, 0.02%Nb, 0.02%Al) plates (thickness 6 mm). Single sided f…

In relation to the generation of oscillating process forces during friction stir welding (FSW), hypotheses covering phenomena that can lead to dynamic effects were formulated and a finite element model of the process-machine-system (containing both …

With regard to the requirement to produce friction stir welded (FSW) lap joints with strength and fatigue properties suitable for commercial regional aircraft, work undertaken by MTS Systems and Bombardier Aerospace to develop pin tools and corrosio…

A description is presented of the development of an aircraft adapter pallet system for the rapid deployment of supplies and equipment for use by the US Army. The pallets consisted of seven lightweight AA-6005A aluminium alloy (Al, 0.4-0.7%Mg, 0.5-0.…

An investigation is presented into the occurrence of a grey line in x-ray diffraction of friction stir welded joints of AA 2024-T62 aluminium alloys, and its influence on mechanical and fatigue properties. Welding in 2 mm sheet was performed using a…