TWI Digital Library

Bead-on-plate welds were fabricated in S31254 superaustenitic stainless steel (19.82%Cr, 17.78%Ni, 6.13%Mo) plates (thickness 6 mm) using friction stir welding (FSW) and their microstructure and texture evolution were studied by high resolution elec…

Friction stir welding experiments were conducted on AA 2024-T3 Al-Cu-Mg alloys to investigate the influence of backplate design on joint microstructure and mechanical properties. Trials were performed using three specially designed backplates based …

The effect of welding conditions (tool rotational speed and tool holding time) on static strength was studied for dissimilar friction stir spot welds between 2017-T6 (Al, 3.5-4.5%Cu, 0.8-1.5%Mg) and 5052 (Al, 2.2-2.8%Mg) aluminium alloy sheets (thic…

Microstructural observations and mechanical tests were undertaken to investigate the phase transformation behaviour of low alloy Cr-Mo steel (0.2%C, 0.61%Mn, 1.07%Cr, 0.16%Mo) sheets (thickness 1.6 mm) during friction stir welding. Stir-in-plate typ…

The effects of pre and post weld heat treatments on the strength, fracture toughness and fatigue crack propagation of welds made by friction stir welding (FSW) in aluminium alloy 6013-T6 sheet material, which may replace the 2024-T3 skin alloy for f…

The tool wear, performance life and optimal parameters for the friction stir welding (FSW) of mild and stainless steels were investigated. Bead-on-plate welds were made in AISI 304L stainless steel (6 mm thickness) and A36 cold-rolled mild steel (6 …

With regard to the production of wear resistant friction stir welding (FSW) tools by laser implantation of ceramic particles, an investigation was undertaken to examine the effect of laser implantation on tool surface hardness, abrasive wear and lif…

A stop-action technique was used to stop tool motion during friction stir welding of aluminium alloys in order to study the interactions between the parent material and welding tool pin in the keyhole. Welds were made in 25 mm thick Al-Cu-Li 2195 pl…

Electron backscattering diffraction (EBSD) was employed to examine the grain refinement during rapid cooling friction stir welding of commercially pure copper sheets (thickness 2 mm) and the application of a liquid CO2 cooling technique to reduce th…

Friction stir welding (FSW) experiments were undertaken on AA 6061-T6 aluminium alloys to investigate the effects of liquid cooling of tooling on spindle speed, spindle torque, spindle power, forge force, and the amount of material plastically defor…

An investigation is presented into the influence of friction stir welding (FSW) process parameters (tool rotation speed and feed rate) on the mechanical properties and microstructure of welded joints of AA2095 (Al, 4.6%Cu, 1.14%Li) in as-welded and …

Simultaneous double-sided friction stir welding (DFSW) experiments were undertaken on AMX 602 alloys (Mg, 6%Al, 0.5%Mn, 2%Ca) and the influence of diverse material flows caused by differing process parameters (rotation direction and travel speed) an…

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 …

With regard to the capability of ultrasonic vibration enhanced friction stir welding (UVeFSW) to improve weld formation quality as well as the microstructure and mechanical properties of the welded joints, experiments were undertaken to clarify the …

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 welding was employed to fabricate bead-on-plate welds on AA 6063 aluminium alloy sheets (thickness 5 mm) and dissimilar joints between AA 6063 and S45C carbon steel plates (thickness 6 mm), and the influence of weld shape on microstruc…

Haynes Alloy 282 (Ni, 19.45%Cr, 10.28%Co, 8.55%Mo) was deposited onto Inconel 600 substrates (Ni, 16.69%Cr, 9.36%Fe) using a cold-wire TIG process, subjected to additive friction stir processing (AFSP) to create gamma-strengthened surface layers, an…

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…

An environmental comparison of friction stir welding (FSW) and MIG welding is presented in aluminium railway rolling stock for the following aspects: material consumption, energy consumption, work environment, emissions and waste, and need of transp…