TWI Digital Library

Several kinds of Co-based alloys with different mechanical properties (e.g. high temperature strength, hardness, wear resistance and gamma-solvus temperature) were designed for friction stir welding (FSW) tool applications by varying chemical compos…

Friction stir welding (FSW) experiments were conducted on a variety of materials and grain structure development, material flow characteristics and crystallographic texture formation were examined by high-resolution electron backscatter diffraction.…

A feasibility study is presented for the joining of mild steel plates (0.2%C, 0.11%Si, 0.63%Mn) of 12 mm in thickness by friction stir welding (FSW). Process optimisation using a combination of operating parameters and tool geometries is discussed, …

Friction stir welding (FSW) experiments were conducted on commercially pure titanium sheet (thickness 3 mm) to identify the optimum tool material and process conditions; the microstructure and mechanical properties of the welded joints were determin…

Local stress-strain curves were determined from an array of spherical indents on the cross-section of the joint of a friction stir welded (FSW) high strength aluminium alloy AA 2198 sheet, in order to characterise the mechanical properties of differ…

In relation to the industrialisation of the friction stir welding process to facilitate qualification of welding machines for different applications, a methodology is presented based on the interactions between tool, workpiece and material. Issues d…

An indirect temperature measurement system was developed based on the acquisition of torque and process forces during friction stir welding (FSW) and a mathematical model incorporating a grey box approach was formulated to determine the correlation …

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…

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…

SiC particles, multi-walled carbon nanotubes and C60 fullerene were dispersed in an AZ31 alloy matrix by friction stir processing (FSP) and the microstructure and mechanical properties of the surface composites were investigated. The FSP conditions …

The microstructure and mechanical properties of double-sided welds made by friction stir welding (FSW) in aluminium alloy AA-5083 were investigated as part of research into the use of the alloy in vessels for storing liquid hydrogen at cryogenic tem…

The production of aluminium alloy forged suspension parts for light-weight vehicles using circumferential friction stir welding (FSW) is considered. The suspension arm is composed of three extruded shapes (bush bracket, yoke and pipe) joined by FSW.…

The material point method based on NairnMPM software was employed to formulate a 2D model of elastoplastic material flow around a friction stir welding (FSW) tool probe and to examine 2D elastoplastic deformation and the frictional interaction at th…

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

A thermal numerical 3D model to predict temperature and machine torque values for bobbin tool friction stir welding (FSW) is presented. The model includes a 3D representation of the work piece, clamping and bobbin tool. The heat transported by the t…

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…

With regard to the development of the MELD process (formerly, additive friction stir deposition) involving the deposition of feedstock material on a substrate via a hollow rotating tool, a mesh-free coupled thermomechanical approach called smoothed …

Friction stir welding was employed to fabricate joints in aluminium and magnesium alloys, and the weld zone microstructure and plastic deformation behaviour were investigated. The materials tested were AA 5454-H22 (Al, 2.85%Mg) wrought alloy sheets …

A coupled model, comprising a computational fluid dynamic process model, a precipitate evolution model based on classical phase transformation theory and a classical strengthening model, was formulated to investigate the effect of process parameters…