TWI Digital Library

A description is presented of the friction stir welding (FSW) machine developed for fabrication of the external fuel tanks for the Space Shuttle. The cylindrical part of the tanks was composed of curved panels welded into barrels with welds of const…

A friction stir welding (FSW) process based on the use of a self-reacting pin tool (SRPT) was developed for the joining of solid and hollow extrusions for aluminium railway car body structures; the mechanical properties of welded joints were investi…

Friction stir welding was employed to fabricate dissimilar joints between 5A06-H112 aluminium alloy (Al, 5.8-6.8%Mg, 0.5-0.8%Mn) and 304L stainless steel (0.03%C, 18-20%Cr, 8-11%Ni) and material flow behaviour was investigated by microstructure obse…

Al, 50%Si alloys were joined by friction stir welding (FSW) on spray deposited sheets (thickness 1.5 mm) for butt welding and powder metallurgy plates (thickness 10 mm) for surface welding and the welded joint surface quality and microstructure were…

Bobbin-tool friction stir welding (BT-FSW) is a variant process of conventional friction stir welding with a particular tool configuration composed of an additional lower shoulder, enabling additional heat input and complete penetration of the pin. …

With regard to the problem of parameter development for friction stir welding (FSW) of workpieces with 3D joints, a self-tuning algorithm is presented based on the tool-workpiece thermocouple (TWT) method for temperature measurement to facilitate th…

Liquid hydrogen (LH2) produced from renewable energy sources is now recognised as the most promising source of energy to achieve zero carbon emission travel. Thin walled aluminium vessels, lining carbon fibre reinforced polymer (CFRP), could offer a…

With regard to the development of the stationary shoulder friction stir welding (FSW) technique as a long term loading joining process offering enhanced weld seam mechanical properties, an investigation is presented into coordinated material flow be…

An experimental investigation was made of the effect of welding tool shape on welding defects and material flow during friction stir welding (FSW) of dissimilar materials. Friction stir welding tools used had tool shoulders of tool steel and the pro…

Al, 50%Si alloys were joined by friction stir welding (FSW) on spray deposited sheets (thickness 1.5 mm) for butt welding and powder metallurgy plates (thickness 10 mm) for surface welding and the welded joint surface quality and microstructure were…

An investigation is presented into the bending properties of welded joints prepared by friction stir welding (FSW) in various structural aluminium alloys during which the influence of process conditions and alloy composition (Mg, Si, Zn levels) was …

The principles of spot friction welding (SFW) and the differences between SFW and linear friction stir welding (FSW) are outlined. Displacement control and load control of SFW machines are described. Experiments were conducted using a displacement-c…

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…

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…