TWI Digital Library

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. …

Numerical simulation of the friction stir welding (FSW) process was undertaken by means of an arbitrary-Lagrangian-Eulerian (ALE) formulation and a fully coupled thermomechanical analysis was performed to account for the heat flux generated by plast…

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…

The mechanical properties of the parent metals and friction stir welded joints in aluminium alloy 6 mm plate 2014A, 7075 and 5083 are summarised. CTOD and J fracture toughness results are reported for the parent metal and up to five different region…

An investigation is presented into the joint efficiency and tensile properties of welded joints in various structural aluminium alloys prepared by friction stir welding (FSW), looking at the effects of compositional differences in the parent metals …

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 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…

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…

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…

The ScanStir framework, comprising an experimental friction stir welding (FSW) set-up, numerical models based on open source finite element method software packages, and a high performance computer, was used to simulate the residual stress profile i…

Similar and dissimilar T-joints were made by friction stir welding (FSW) of 3 mm thickness 2024-T3 cover sheet combined with 2.5 mm thick stiffeners consisting of either 2024-T3 or 2098-T8 (stringer) material. During welding the pin penetrated the s…

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 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…