TWI Digital Library

Friction stir butt welding experiments were conducted on S45C medium carbon steel sheets (thickness 1.5 mm) under various conditions and the microstructure and mechanical properties of the welded joints were investigated. Single run butt welding was…

An experimental study was carried out to investigate the link between the microstructure and the mechanical and corrosion properties for a friction stir welded aerospace aluminium alloy 7349-T6 (Al, 1.4-2.1%Cu, 1.8-2.7%Mg, 7.5-8.7%Zn) developed for …

Thermocouples were mounted in a friction stir welding (FSW) tool to measure its temperature during the FSW of aluminium alloy 6061-T6 (Al, 1.0%Mg, 0.61%Si, 0.27%Cu, 0.10%Mn) sheet of 3 mm thickness. Type K thermocouples were mounted at various dista…

Friction stir welds in S355 carbon manganese steel plate of 12 mm thickness were characterised by microstructural studies and measurements of mechanical properties. A tungsten-rhenium alloy tool with a pin length of 7.5 mm was used, running at 400 r…

3rd International Symposium, 27-28 Sep 2001, Poster Session, Paper 13

The material flow and microstructural evolution during friction stir processing of A356 cast alloy (Al, 7%Si, 0.3%Mg, 6.4 mm thickness) using tools of H13 tool steel were investigated. The deformation and microstructure in the stir zone were studied…

The material flow in dissimilar material friction stir welding (FSW) between AA 6063 alloy (Al, 0.5%Mg, 0.43%Si) and S45C carbon steel (0.43%C, 0.25%Si, 0.77%Mn) was investigated by determining the 3D forces acting on the welded joint and the intern…

The influence of the process parameters on the microstructure, mechanical properties and corrosion of friction stir welded aluminium alloy 2024-T3 was investigated. Sheets of 1.6 and 4 mm thickness were welded using rotational speeds of 800-2400 rpm…

Neural-fuzzy modelling techniques were employed to develop a transparent model-based approach that creates linguistic indices directly from spectral-temporal FSW (friction stir welding) data in order to analyse the relationship between process param…

A computational fluid dynamics package, FLUENT, was used to model the viscous material flow during friction stir welding using two- and three-dimensional tool shapes. Two approaches were used to describe the viscosity. The first approach interpolate…

Friction stir welding experiments were undertaken on carbon manganese steel plates (thickness 6 mm) in order to map the internal temperature distribution, assess the effects of minimal plate preparation and investigate the microstructures and mechan…

The hybrid friction stir channelling (HFSC) technique was employed to produce, in one action, a channel and a joint between dissimilar thickness overlapping Al plates and dissimilar Al-Cu plates, and the microstructural and geometrical features of t…

Friction stir welding experiments were undertaken on butt joints of AA6063 alloys (Al, 0.45-0.9%Mg, 0.2-0.6%Si) and AA6063 matrix reinforced with 6 and 10.5 vol.% B4C, and the effect of particle concentration on welded joint microstructure and micro…

The principles are presented of stationary shoulder friction stir welding (FSW) with examples of the weld microstructures that can be achieved. Trials were conducted on 6.35 mm plate of Ti-6%Al-4%V titanium alloy, with spindle speed of 400 rpm and t…

A series of friction stir welding (FSW) experiments using threaded tool pins and AA5083 (Al, 4.5%Mg, 0.6%Mn) or A356 (Al, 7%Si, 0.3%Mg) workpiece alloys was undertaken in order to understand material flow mode within thread spaces and its influence …

Two friction stir welding (FSW) procedures, a sacrificial anvil method and a hybrid FSW/arc welding technique, were developed to assure consistent full penetration welds during the construction of offshore and onshore pipelines, respectively. The of…

Friction stir spot welding (FSSW) experiments were undertaken on sheet specimens (thickness 1.3 mm) of AZ31 magnesium alloy (Mg, 3%Al, 1%Zn) and the effects of process conditions and workpiece surface condition on the macrostructure, microtexture an…

A finite element model based on a staggered thermo-fluid solution scheme was employed to investigate flow around friction stir welding (FSW) tools, "MORFEO" code simulations were undertaken to predict flow patterns and temperature distribution in th…

The material flow of aluminium alloy and steel during dissimilar friction stir spot welding was visualised using zinc tracers and the surface temperature of the flat-tipped tool during stirring was measured by telemetry. Welds were produced in AA505…

Friction stir welding (FSW) experiments were undertaken on Invar 36 alloy (Fe,36%Ni) sheet specimens (thickness 3 mm) and the microstructure evolution and recrystallisation mechanism were investigated. Bead-on-plate FSW was performed using a polycry…