TWI Digital Library

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…

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…

The influence of pin length and insulating anvil material on friction stir spot welding (FSSW) of thin (0.9 mm) 6111-T4 aluminium (Al, 0.73%Si, 0.65%Mg, 0.96%Cu, 0.3%Mn, 0.2%Fe) was investigated. Welds were made varying the length of the tool pin (1…

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 experimental investigation is presented into the fatigue properties of welded joints made by friction stir welding (FSW) of 2024-T4 (Al, 4.4%Cu, 0.6%Mn, 1.5%Mg) and 2014-T6 (Al, 4.5%Cu, 0.8%Mn, 0.5%Mg) aircraft alloys and their dependence on proc…

The influence of pores and residual stresses on fatigue crack propagation was studied for friction stir welded joints in aluminium alloys 2024-T3 and 6013-T6 of thickness 4 mm. Good welds and pore-containing welds were produced using tools with and …

An investigation is presented into bead-on-plate friction stir welding of type 304 austenitic stainless steel (18.1%Cr, 8.56%Ni) and the relationship between corrosion properties and weld microstructure. Microstructural observations were performed b…

An experimental study was carried out on friction stir welded aluminium alloy tailored welded blanks (TWB's) to determine mechanical properties and microstructural characteristics in order to evaluate friction stir welding (FSW) as a feasible method…

With regard to the occurrence of coarse alpha-Al dendrites, eutectic phase, shrinkage porosity and other defects in cast aluminium alloys, an investigation was undertaken into the influence of different combinations of friction stir processing (FSP)…

2024-T3 aluminium alloy (Al, 4.4%Cu, 1.5%Mg) thin sheets (thickness 1 mm) were joined by friction stir welding (FSW), and the effect of process parameters (tool rotation speed and traverse rate) on the microstructure and mechanical properties of the…

Friction stir welding trials were undertaken on AA 7075-T7351 aluminium alloy plates (thickness 9.525 mm) to investigate the influence of backing plate characteristics on heat input and cooling rate. Experiments were performed on an MTI RM2 friction…

The effect of tool pin displacement on defect formation in friction stir welded (FSW) 5052 Al alloy and C11000 copper in butt joint configurations was investigated, with the tool pin plunged first in copper, secondly at the weld joint centre line an…

The distortion, mechanical properties and microstructure of friction stir, submerged arc and GMA welds in HSLA-65 steel (0.09%C, 1.32-1.39%Mn, 0.01-0.06%Ni, 0.041-0.067%V, 0.03-0.035%Nb) and DH-36 steel (0.18%C, 0.90-1.60%Mn, 0.25%Cr, 0.40%Ni, 0.08%…

The influence of welding tool design on the microstructure of the interface and friction stir spot welded joint between aluminium alloy and low carbon steel was investigated. Two types of welding tool were evaluated: a tool comprising a probe and sh…

Microstructure observations and bending tests were employed to investigate the basal plane texture and room temperature formability of AZ31 magnesium alloy rolled and extruded sheets (thickness 3 mm) treated by friction stir processing (FSP). Overla…

Coupons with both triangular and rectangular gaps were prepared from AA 2024 aluminium alloy plate stock by friction stir welding (FSW) and volumetric defect formation was investigated by a neural network-based electronic NDE (e-NDE) technique. The …

The optimal conditions for the friction stir welding of high-N-containing austenitic stainless steel were evaluated. The influence of heat input (welding speed (50-400 mm/min)) on the surface appearance, macrostructure, microstructure, hardness, yie…

FSSW has been performed in two different automotive 1.5 mm-thick aluminium alloys– AA5754-H22 and AA6082-T6 in similar and dissimilar combination using different joining parameters (e.g. plunge rate, rotational speed and dwell time). Plunge depth ha…

A temperature monitoring system incorporating thermocouples mounted in the probe and shoulder was employed to measure the temperature of the rotating tool during the fabrication of dissimilar butt joints between A6005C aluminium alloy (Al, 0.5%Mg, 0…