TWI Digital Library

AZ31 magnesium alloy sheets (thickness 4 mm) were joined by friction stir welding under process conditions with and without a heat sink, and the residual stress distribution in the joints was investigated by a hole drilling method according to the A…

With regard to the application of friction stir welding (FSW) of ultra thin aluminium sheets (thickness less than 1 mm) to electronic packaging and micromechanical component joining, an investigation is presented into fixturing, process parameter an…

Friction stir processing (FSP) experiments were undertaken on three Ni-based alloys (Alloy 625 (Ni, 21.6%Cr, 8.6%Mo, 3.7%Fe), Alloy 718 (Ni, 23.7%Fe, 18.1%Cr, 3.1%Mo, 1%Ti) and Hastelloy X (Ni, 21.3%Cr, 19.2%Fe, 8.3%Mo)) using a W-Re tool, process p…

AA 6061-T651 aluminium alloy (Al, 0.81%Mg, 0.53%Si) plates (thickness 9.5 mm) were joined by friction stir welding (FSW) and the influence of FSW tool eccentricity on material flow and welded joint mechanical properties was investigated. Welding was…

Dissimilar joints between aluminium alloy AA 7075 (Al, 5.58%Zn, 2.48%Mg, 1.38%Cu) and Al, 0.5%Cu alloy were fabricated by friction stir welding (FSW) under optimised process conditions in a hybrid lap-butt weld configuration, and the microstructure …

Thermomechanical modelling of the friction stir butt welding process in AA 5083-H18 aluminium alloys was undertaken using a CFD (computational fluid dynamics) code to describe the steady state, and simulated temperature profiles were compared with t…

Friction stir welding (FSW) was employed to fabricate butt joints in AW 5083 (Al, 4-4.9%Mg, 0.4-1%Mn) aluminium alloy plates (thickness 10 mm) and the influence of process parameters and tool geometry on the character and quality of welded joints wa…

Friction stir processing (FSP) trial experiments were conducted on superplastic Zn, 21.1%Al eutectoid alloys using a modified milling machine and the results were evaluated in relation to residual microstructures, mechanical properties and damping c…

Friction stir processing (FSP) was employed for grain refinement and strengthening of cast Mg, 5.9%Y, 2.6%Zn alloys and the microstructure and mechanical properties of the processed material were investigated. Specimens comprised plates (thickness 1…

A Lagrangian particle model based on the SPH (smooth particle hydrodynamics) method was developed for friction stir welding (FSW) of similar and dissimilar materials by disregarding elastic deformation and describing plastic deformation by the Johns…

An investigation is presented into the metallurgical features of welded joints in various structural aluminium alloys prepared by friction stir welding (FSW) and into the microstructure and hardness distribution of the weld zone. The experimental sp…

An investigation is presented into the influence of tool flats, tool runout magnitude and relative tool runout orientation on the high speed forces acting transversely and longitudinally on the friction stir welding tool. Partial penetration bead-on…

An investigation is presented into the effects of process parameters (welding and rotational speeds) during friction stir welding (FSW) on the hardness and tensile properties of welded joints fabricated in butt configuration sheet specimens (thickne…

In relation to the development of a friction stir welding (FSW) process to seal copper canisters for nuclear fuel waste, an investigation was undertaken into material and heat flow in FSW copper plates (thickness 50 mm) by inserting brass rods into …

Friction stir processing (FSP) was employed to stir electroless copper coated SiC particles with a core shell structure to produce SiC/Cu particle reinforced aluminium matrix composites in the stir zone of AA 6061-T651 aluminium alloy plates with th…

Friction stir spot welding (FSSW) experiments were undertaken on sheet specimens of similar and dissimilar combinations of AA 2024-T3 (thickness 1.27 mm), AA 2024-O (2.2 mm) and AA 7075-T6 (1.27 mm) aluminium alloys under various process conditions,…

With regard to the use of friction pull plug welding to close out the termination hole associated with pin tool retraction during friction stir welding of circumferential welds in pressurised cryogenic propellant tanks, an investigation is presented…

The results of two testing programmes dealing with the metallurgical and mechanical properties of friction stir weldments (thickness 6 and 25 mm) in the aluminium alloys 2024, 5083, 6082/6060 and 7075 are reported, and a systematic study of the key …

The application of friction stir welding to the construction of airframe structures of precipitation-hardened aluminium alloys, using butt, lap and T-joints, is described. A landing gear strut door was manufactured by welding an Alclad 7075-T6 skin …

Precipitation hardened copper alloy sheets (thickness 2 mm) containing Cu, 0.9-1.2%Cr, 0.06-0.09%Zr were joined by friction stir welding (FSW), process parameters were optimised to realise defect-free joints, and the microstructure and mechanical pr…