TWI Digital Library

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…

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 …

Based on a friction model incorporating the dynamic coupling between friction and material flow in heat transfer and fluid flow models, a computational fluid dynamics (CFD) methodology was employed to study material flow during friction stir welding…

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…

Friction stir spot welding (FSSW) was employed to fabricate lap joints in hot extruded AZ31 magnesium alloy sheets (thickness 2 mm), and the effect of introducing nanostructured SiC particles (mean size 40 nm) on the microstructure and mechanical pr…

Quantification approaches applied to phase space data generated from friction stir welding aluminium alloys under varying process conditions are reported. A multi-step, micro-wormhole, non-destructive evaluation phase-spaced, (PS) algorithm that com…

Numerical simulations and experimental tests were undertaken to visualise material flow and to study the effect of the flow field on the mixing mechanism and particle break-up in friction stir welding of metal matrix composites. A 3D thermo-fluid mo…

Friction stir welding (FSW) is discussed in manufacture of a sports car body made largely of aluminium alloy sheet with some components of cast aluminium or extruded aluminium, and the only steel used is the frame for the windscreen. Advantages are …

Nondestructive testing of friction stir welds is discussed. The ultrasonic testing of friction stir welded joints, advantages of phased array testing and test applications are presented briefly. The eddy current array testing technique is illustrate…

Fatigue tests were performed using lap-shear specimens of friction stir spot welded Al, 0.8%Mg, 1%Si alloys. Sheet specimens (thickness 2 mm) were subjected to PWHT of solution treatment and/or ageing. Weld zone microstructure was observed by SEM. F…

The joining of hot rolled aerospace quality AZ31B-H24 magnesium alloy (Mg, 2.5-3.5%Al, 0.7-1.3%Zn, 0.2-1.0%Mn) sheets (thickness 4.95 mm) was investigated using an MTS ISTIR friction stir welding (FSW) machine, the quality of the butt joints produce…

A brief review is presented of the state of development of polycrystalline cubic boron nitride (PCBN) tool materials for friction stir welding (FSW) of high-temperature materials (high alloy steels and Ni based alloys) with respect to weld penetrati…

Multirun friction stir processing (FSP) (12 mm depth over large surface area) was performed on NiAl bronze (Cu, 9.1%Al, 4.4%Ni, 3.9%Fe) thick plates (thickness 40 mm) using a rectangular spiral-out raster path, and longitudinal residual stresses wer…

An overview is presented of the twenty year history and technological developments relating to the application of friction stir welding (FSW) to aluminium alloy railway car body shells. Issues discussed include the history of railway car body shell …

The microstructure and corrosion properties of welded joints in Inconel 22 (Alloy 22 or NO6022) made by friction stir welding (FSW) were investigated. Bead-on-plate welds were produced in Alloy 22 (59.6%Ni, 13.43%Mo, 0.22%Cr, 3.29%W, 3.17%Fe, 0.84%C…

An investigation is presented into a methodology for simulating the entire friction stir welding (FSW) process using a hybrid mesh free method on a graphics processing unit (GPU) and its implementation for different FSW applications such as butt joi…

Friction stir spot welding experiments were conducted on dissimilar metal joints between AA5052 aluminium alloy and two kinds of steel (980 MPa high tensile strength steel and 270 MPa mild steel), and the microstructure and mechanical properties of …

With regard to the use of copper canisters for the storage of spent nuclear fuel, an investigation is presented into a cascade controller to maintain probe temperature and to control power input and tool depth during friction stir welding procedures…

Numerical simulations and experimental measurements were undertaken to study the temperature fields developed during friction stir welding (FSW) of AW 5083 (Al, 4-4.9%Mg, 0.25%Mn) alloy plates (thickness 10 mm). Welding was conducted at a rotational…

Dissimilar butt joints between aluminium alloys and steel or an AZ91 magnesium alloy (Mg, 9.39%Al, 0.85%Zn) were fabricated by ultrasound enhanced friction stir welding (USE-FSW) and their microstructure, mechanical and corrosion properties were inv…