TWI Digital Library

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,…

The influence of welding speed on the friction stir welding (FSW) of a 304 austenitic stainless steel butt joint was investigated. Austenitic stainless steel SUS304 specimens of 160 mm length, 35 mm width and 1.5 mm thickness were butt-welded with a…

An overview is presented of the benefits and limitations of stationary shoulder friction stir welding (SSFSW) compared with conventional FSW and other joining technologies; the challenges faced when applying FSW on a serial kinematics robot in relat…

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 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…

Friction stir welds were produced from S460N and S355N steel alloys for several combinations of welding speed and rotational speed with the heat input ranging from 130 to 180 [J/mm]; or, from insufficient to excessive. The welds were characterised a…

A fully coupled thermomechanical three dimensional finite element (FE) model was developed to analyse the thermomechanical conditions, including material flow and heat generation, at the tool/matrix interface in friction stir welding. The model was …

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…

Al, 50%Si alloys were joined by friction stir welding (FSW) on spray deposited sheets (thickness 1.5 mm) for butt welding and powder metallurgy plates (thickness 10 mm) for surface welding and the welded joint surface quality and microstructure were…

A plastic replication technique was employed to investigate surface crack initiation and growth in 2024-T351 Al alloy friction stir welded (FSW) joints during fatigue bending tests. Fatigue failure mechanisms were examined, and a modified Hobson-Bro…

Torsion testing was carried out using a range of temperatures and strains to simulate the formation of nugget zone grain structures in friction stir welds of a typical aluminium alloy (7010) in order to investigate the formation mechanisms. Electron…

Friction stir welding (FSW) experiments were performed on Al-based alloys prepared by direct-chill casting and continuous casting, and the influence of intermetallic particles and process parameters on onion ring zone morphology and microstructure w…

The use of friction stir welding to produce aluminium alloy tailor welded blanks for automotive applications was investigated by measuring the hardness and microstructure of friction stir welds in aluminium alloy 5052 (Al, 2.46%Mg, 0.24%Fe, 0.15%Cr,…

Friction stir welding (FSW) was applied to the magnesium alloy AZ91 (Mg, 8.21%Al, 0.64%Zn), optimum welding parameters were derived, structural and mechanical properties of the weld zone were determined, and the influence of microstructure on weld p…

The influence of joining parameters on the microstructure, intermetallics, hardness, shear properties and tensile strength of dissimilar friction stir welds between AA1050 aluminium alloy and hot-stamped boron steels was investigated. Overlap welds …

AA 2219 aluminium alloy sheets (thickness 2.5 mm) were joined by friction stir welding (FSW) and an investigation was undertaken into the relationship between joint mechanical properties, the torque generated by the spindle motor and process variabl…

The stationary shoulder technique was applied to the self reacting pin tool (SRPT) for friction stir welding (FSW) of high quality aluminium alloy railway car body structures in order to enhance the appearance of no coating side structures construct…

A method was developed to integrate basic force control functionalities into a CNC milling machine for friction stir welding (FSW) by using a standard CNC controller, optimum control parameters for various FSW conditions were identified and the forc…

Following an overview of initial work on friction stir welding (FSW) of titanium alloys, developments in the stationary shoulder FSW (SSFSW) technique are described, highlighting the potential of the SSFSW approach to increase welding speed (up to 2…