TWI

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…

With regard to the development of hybrid friction stir welding-adhesive bonding (FSW-AB) for the fabrication of lap joints, a mesh free coupled thermomechanical simulation of the FSW-AB process was undertaken using the SPHriction-3D code and the num…

A feasibility study was undertaken to investigate friction stir welding of hybrid lap joints between polyphenylene sulphide and AA 6111 alloy (Al, 0.76%Mg, 0.63%Si, 0.75%Cu) sheets (thickness 2 and 1.5 mm, respectively) and the influence of process …

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 investigation was undertaken to examine the effects of high welding speed and the use of thermal boundary conditions during friction stir welding (FSW) on the mechanical properties of AA 7050 aluminium alloy weldments. FSW experiments were perfor…

The aim of this investigation was to study morphological, mechanical and microstructural properties of similar and dissimilar friction stir welds in 1 mm thick sheets of phosphorous-­deoxidised copper and 5083-H111 aluminium alloy. At the weldin…

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 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…

Friction stir welding (FSW) studies were undertaken to join sheet and plate specimens of aluminium alloys in a butt joint configuration, and design of experiments methods were employed to optimise process parameters with respect to weldment quality …

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…

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…

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…

The CFD (computational fluid dynamics) technique was employed to develop a numerical model of friction stir welding (FSW) of DH36 steel (0.16%C, 1.2%Mn, 0.02%Cr, 0.02%Nb, 0.04%Al, 0.03%Cu) plate (thickness 6 mm) under low and high welding speed cond…

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…

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 …

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…

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 …

A description is presented of the process flow of a production job based on friction stir welding (FSW) for the serial production of aluminium drying trays for the food industry. FSW joint quality issues (joint impermeability, weld surface quality a…

Technology improvements and process innovations in respect of friction stir welding (FSW) of high temperature materials are reviewed, welding process conditions and mechanical properties of completed welds for various alloys using polycrystalline cu…