TWI Digital Library

A computational fluid dynamics code ("CosmosFlow") was employed to evaluate the temperature distribution in materials during friction stir welding (FSW). Thermal simulations based on finite element models were undertaken to predict the optimum ratio…

Friction stir spot welding (FSSW) was performed on dual phase 800 high strength automotive steel (0.14%C, 0.23%Si, 1.52%Mn) to establish the effect of tool rotation speed (750-2400 rpm) for a number of weld cycles featuring different Z-axis plunge r…

Friction stir welding tools of three different compositions (MS80, Q70 and Q60) of polycrystalline cubic boron nitride (PCBN) were tested to examine wear and fracture sensitivity. Three tools were made from each composition and were run for a total …

Defect free welded joints were fabricated in 5083-O aluminium alloy (Al, 4.3%Mg, 0.65%Mn) plates (thickness 20 mm) by friction stir welding (FSW) and the influence of tool geometrical features on their microstructures and structure properties relati…

The development of friction stir welding (FSW) as a potential low distortion, cost-effective joining method for HSLA-65 steel T-joints is presented with reference to application in the ship building industry. Experiments were carried out on steel (0…

The development of a novel friction stir welding (FSW) monitoring for the in-process collection of tool force data is reported. The concept and features of this Advanced Rotating Tool Environment Monitoring and Information system (Artemis), based ar…

With regard to the development of a hybrid structure tool holder to facilitate chatter vibration suppression in metal cutting processes, an investigation was undertaken into the use of friction stir girth welding (FSGW) to fabricate dissimilar joint…

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…

An investigation is presented into the processing window for friction stir welding (FSW) of Formall 545 (equivalent to AA-5083) to age-hardened AA-6082 aluminium alloys with regard to tool rotation and traverse speeds, and into an evaluation of a nu…

5083-O aluminium alloy sheets (thickness 3 mm) were butt welded using a gate-type friction stir welding (FSW) machine to investigate tolerance to deviations in butt-line/tool-travel line, gap spacing and tool roll angle, and the welded joints were e…

In relation to the application of tailor welded blanks of aluminium alloys to the vehicle weight reduction process, an investigation is presented into the precipitation sequence in friction stir welded 6016 alloy sheets (thickness 2 mm) during a pai…

An experimental study was conducted to measure the torque of friction stir welded cast aluminium A356 (Al, 7%Si, 0.3%Mg) over a range of travel and rotational speeds. Plates of 6.35 mm thickness were FSW using travel speeds and rotational speeds ran…

The weldability of zirconium-titanium alloy joints fabricated by means of friction stir welding (FSW) was investigated. Sheets (thickness 3 mm) of Zr-Ti alloy (Zr, 41%Ti, 4%Al, 3%V) underwent FSW with a tungsten-rhenium alloy (W, 25%Re) tool with an…

With regard to the development of Al-Mg-Sc alloys for aerospace applications, an investigation is presented into friction stir welding (FSW) of thick plates (thickness 35 mm) and thick-walled pipes made from 1570C alloy (Al, 5.7%Mg, 0.29%Mn, 0.2%Sc,…

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 spot welding experiments were conducted on dissimilar metal joints between AA5052 aluminium alloy and two kinds of steel (980 MPa high tensile strength steel and 270 MPa mild steel), and the microstructure and mechanical properties of …

With regard to the use of copper canisters for the storage of spent nuclear fuel, an investigation is presented into a cascade controller to maintain probe temperature and to control power input and tool depth during friction stir welding procedures…

Numerical simulations and experimental measurements were undertaken to study the temperature fields developed during friction stir welding (FSW) of AW 5083 (Al, 4-4.9%Mg, 0.25%Mn) alloy plates (thickness 10 mm). Welding was conducted at a rotational…

Dissimilar butt joints between aluminium alloys and steel or an AZ91 magnesium alloy (Mg, 9.39%Al, 0.85%Zn) were fabricated by ultrasound enhanced friction stir welding (USE-FSW) and their microstructure, mechanical and corrosion properties were inv…

Rotary friction welding was employed to fabricate joints between an ASTM A36 steel pipe (0.11%C, 0.2%Si, 0.92%Mn, 0.02%Cr, 0.02%Nb, 0.03%Al) and an API 6A flange and microstructural analyses and mechanical tests were undertaken to investigate the se…