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…

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…

Rotary friction welding was employed to fabricate joints between an ASTM A36 steel pipe (0.11%C, 0.2%Si, 0.92%Mn, 0.02%Cr, 0.02%Nb, 0.03%Al) and an API 6A flange and microstructural analyses and mechanical tests were undertaken to investigate the se…

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…

With regard to the development of additive friction stir deposition (or MELD) as an additive manufacturing process, a mesh-free coupled thermomechanical approach was employed to model MELD by invoking smoothed particle hydrodynamics to discretise th…

Friction stir spot welding (FSSW) experiments were conducted between AA 5052 aluminium alloy and an SP-270C low carbon steel under various process conditions (tool rotation speed 1000-5000 rpm, plunge depth 0.1-0.7 mm), and the microstructure and me…

The stationary shoulder friction stir welding (SSFSW) process was employed to fabricate defect-free joints in a variety of aluminium alloys and experiments were undertaken to investigate the microstructure and mechanical properties of the joints. Th…

Synchrotron x-ray diffraction measurements were used to obtain residual stress state data for welded joints made by friction stir welding (FSW) in AA-5083-H321 aluminium alloys as a function of process parameters (rotational speed and feed rate). Bu…

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 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…

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 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…