TWI Digital Library

An adjustable tool was employed during friction stir welding (FSW) of A1050 pure aluminium sheets (thickness 5 mm) and the effects of the tool shoulder and probe on the stir zone shape and defect formation were investigated by changing the rotationa…

Friction stir processing (FSP) experiments were undertaken on 7B04-O aluminium alloys (Al, 6.23%Zn, 2.88%Mg, 1.58%Cu) and the evolution of microstructure and mechanical properties in the stir zone was investigated. FSP was conducted using a tool mad…

Friction stir processing (FSP) was employed to fabricate oxide dispersion strengthened copper composites and the microstructure and mechanical properties of the materials were investigated in order to clarify the effect of process parameters on mate…

Friction stir welding (FSW) experiments were undertaken on Cr-containing carbon steels (0.22%C, 0.5%Mn, 0-4%Cr) and the influence of Cr content on joint microstructure and mechanical properties was investigated. FSW was conducted at a tool rotationa…

Lap joints were fabricated in 2024-T3 aluminium alloy sheets (thickness 1 or 0.6 mm) by refill friction stir spot welding (RFSSW) and the influence of tool sleeve depth on joint quality was investigated. Welding was performed at tool depths of 1.1-1…

Butt joints were fabricated in AA 6061-T6511 aluminium alloys by friction stir welding (FSW) and the influence of the welding equipment rigidity on their microstructure and mechanical properties was investigated. The experimental set-up incorporated…

Butt joints were fabricated in a Ruuki Optim 700 MC Plus microalloyed low carbon high strength complex phase steel (0.06%C, 1.79%Mn, 0.01%V, 0.08%Nb, 0.11%Ti) using one-sided and two-sided friction stir welding in order to investigate the difference…

Friction stir processing (FSP) was employed to repair casting defects such as shrinkage cavities and porosity in nickel aluminium bronze, and the corrosion behaviour of the processed material was examined through short-term and long-term testing and…

The microstructural evolution during FSW of beta-annealed plates of Ti-5111 (Ti, 5%Al, 1%Sn, 1%Zr, 1%V, 8%Mo) was investigated above and below the beta transus temperature. Variable penetration tools of a refractory-based material with different dim…

Low temperature friction stir welding (FSW) was employed to join three types of carbon steels and the effects of carbon content, process conditions and phase transformations on the microstructure and mechanical properties of the welded joints were i…

To study the feasibility of SFW (spot stir friction welding) with adhesive, a process that is also called spot friction weld-bonding, aluminium 6111-T4 coupons (25x100 mm, thickness 0.9 and 1.0 mm) were used to produce SFW specimens in a lap shear c…

A phenomenologically based semiphysical modelling approach was employed to develop a process window for friction stir welding (FSW) of AA 2024-T3 aluminium alloy, incorporating simulation of the filling level of the welded joint as a means to determ…

A numerical simulation is presented for the development and integration of a pin tool for friction stir welding (FSW) of aluminium alloys. The Triflute tool design was optimised. The macro- and microstructure of lap joints in A6N01 alloys were studi…

3D fully-coupled thermomechanical models implemented in the ABAQUS finite element code were developed to investigate residual stresses and distortion in friction stir welding (FSW) and three case studies were examined. The temperature field obtained…

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…

An experimental study was made of the effect of friction stir processing (FSP) and the influence of process parameters on the microstructure and mechanical properties of cast magnesium AZ91 alloy. FSP tests were conducted on die cast plates of 4 mm …

Dissimilar lap joints were fabricated between 6022 aluminium alloy and SPCC low carbon steel using friction stir welding (FSW) and the effect of probe tip position on microstructure and mechanical properties was investigated. FSW was performed at a …

The electrically assisted friction stir welding (EAFSW) technique, in which an electric current is fed through the workpiece to soften the metal by means of ohmic heating, is described and some trial experimental results are reported. The initial EA…

With regard to the application of wear resistant surface layers on chosen substrates, an investigation is presented into the deposition of cermet (WC, 10%Co, 4%Cr or Cr3C2-NiCr) and oxide (Al2O3) coatings onto AA 5083 aluminium alloy substrates by c…

A review is presented of the development of W, 25%Re friction stir welding (FSW) tool materials for application to steels and hard metals, such as titanium and nickel-based superalloys. Issues discussed include: the DUST (dual use science and techno…