TWI Digital Library

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…

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 corrosion behaviors of friction stir welded (FSW) joint of 7075 aluminum alloy with and without shot peening treatment (SPT) were investigated by method of acid salt spray. The macroscopical and microscopical corrosion features were observed by …

Dissimilar joints between AA 6061 aluminium alloy (Al, 0.91%Mg, 0.52%Si, 0.6%Fe) sheets (thickness 2 mm) and zinc-coated HIF-GA (high strength interstitial-free galvannealed) steel (0.002%C, 0.09%Si, 0.47%Mn) sheets (thickness 1 mm) were fabricated …

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…

Friction stir spot welding experiments were conducted in a cross-tension configuration on automotive grade A 6002-T4 sheets (thickness 1 mm) and the effect of pin and shoulder geometry on welded joint static strength was investigated. The welding pa…

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 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…

An experimental investigation was undertaken to examine the effect of a TIG welding torch assisted heating source on the microstructure, mechanical properties and fracture mechanism of dissimilar Cu/austenitic stainless steel butt joints fabricated …

Friction stir welding experiments were undertaken on rolled plates (thickness 25.4 mm) of AA 6061-T6 aluminium alloys to investigate the role of backing plate material on thermal gradient changes in the through-thickness direction. Welding was perfo…

A discussion is presented on research studies carried out to develop friction stir welding (FSW) as a method for the production of thick (50.8-76.2 mm; 2-3 in) aluminium alloy 7050 tailored blanks suitable for use in the aerospace industry. Single r…

The effects of stir rod angle (0-3 degrees), rotation speed (500-2500 rpm) and travel speed (1-8 mm/s) on metal flow in friction stir welds in pure aluminium (A-1100) and an Al-0.5%Mg alloy (A-5005) were studied. The microstructure, hardness and ten…

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%…

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…

In relation to the production of local metal matrix composites (MMCs) by friction stir processing (FSP), an investigation was undertaken into the influence of tool geometry and process parameters on the shape of the nugget zone and the assessment of…

Butt joints were fabricated between A6063 aluminium alloys and S45C mild steel by friction stir welding (FSW) and the effect of material flow on the weld interface formation was investigated using the stop action technique. FSW experiments were unde…

Friction stir welded joints, produced in an extruded profile of aluminium alloy 6082-T6 using run on and run off plates, were evaluated by measurement of mechanical properties. Plate of 6 mm thickness was welded using a range of process parameters, …