TWI Digital Library

Friction stir welding of DH-36 mild steel sheet was evaluated for shipbuilding applications. Butt welds were prepared in sheet of 4.6 mm (0.18 in) thickness using an unthreaded tool (W, 25%Re) rotating at 400 or 500 rpm and travelling at 203 mm/min …

An instrumented constrained Charpy test was used to measure the fracture toughness of friction stir welded joints produced using several designs of welding tool in sheet aluminium alloys 6082 (4.7 mm) and 7108 (3.2, 5.0 mm). This test constrained pl…

A stop-action technique was used to stop tool motion during friction stir welding of aluminium alloys in order to study the interactions between the parent material and welding tool pin in the keyhole. Welds were made in 25 mm thick Al-Cu-Li 2195 pl…

This paper describes the joining criterion for lap joining of dissimilar metal materials of aluminum and stainless steel by friction stir. A criterion for evaluating the joined state or non-joined state is proposed, which is led by the concept based…

Friction stir welding (FSW) experiments were undertaken on commercially pure titanium and Ti, 6%Al, 4%V alloy sheets (thickness 1.2 and 1.25 mm, respectively), the microstructure of the weldments was examined and the wear mechanisms of the welding t…

Friction stir welding (FSW) experiments were undertaken on stacked laminates of pure copper and 60/40 brass (60%Cu, 40%Zn) to investigate material flow patterns and microstructural changes during welding. FSW was conducted using a threaded MX Tri-fl…

SiC particles, multi-walled carbon nanotubes and C60 fullerene were dispersed in an AZ31 alloy matrix by friction stir processing (FSP) and the microstructure and mechanical properties of the surface composites were investigated. The FSP conditions …

The material flows of aluminium and steel during friction stir welding were visualised in three dimensions using x-ray transmission radiographic real-time imaging. The movement of a miniature spherical tungsten tracer during welding was visualised u…

An experimental investigation was conducted into the friction stir welding (FSW) of 6 mm thickness aluminium alloy AA6082-T6 using welding conditions slightly outside the common process window. The microstructure, quality and fatigue strength of the…

The design, fabrication and evaluation of a portable friction stir welding (FSW) system for the in-situ field repair of aluminium structures to a depth of 6 mm is reported. The conceptual design of the FSW machine was produced using a dual-track app…

A mobile friction stir welding (FSW) machine, comprising a self-contained truck with four wheels, was proposed for use when welding large structural members made from aluminium alloys and the concept was verified by welding trials using a prototype …

The development and experimental validation of a finite element model ("DEFORM-3D" software) for friction stir welding (FSW) of 7XXX series aluminium alloys (e.g. AA-7075) with varying pin angle and advancing speed are described, and application of …

Friction stir welds were made in the austenitic stainless steels 304L (thickness 6.4 mm (0.25 in) and 3.2 mm (0.125 in)) and the superaustenitic stainless steel AL 6XN. Welds in the 3.2 mm sheet were made in a single pass. The 6.4 mm plates were wel…

The production of aluminium alloy forged suspension parts for light-weight vehicles using circumferential friction stir welding (FSW) is considered. The suspension arm is composed of three extruded shapes (bush bracket, yoke and pipe) joined by FSW.…

The microstructure and mechanical properties of double-sided welds made by friction stir welding (FSW) in aluminium alloy AA-5083 were investigated as part of research into the use of the alloy in vessels for storing liquid hydrogen at cryogenic tem…

An experimental and numerical analysis of the wear of a polycrystalline boron nitride (PCBN) friction stir welding (FSW) tool is overviewed as presentation slides. Topics highlighted include: FSW plunge trials of EH46 shipbuilding steel at a plunge …

The integration of friction stir welding (FSW) into the manufacturing sequence of spinformed domes of aluminium alloys is presented in terms of its optimisation and the specific iterations required with the prior and follow-up procedures of the manu…

An investigation is presented into the use of a friction stir welding/forging process to fabricate tee and I-beam shapes with integral radial shaped fillets, the optimisation of process parameters for different alloys and shapes, and the results of …

Friction stir welding (FSW) experiments were undertaken on sheet specimens (thickness 5 mm) of 5454-H111 aluminium alloys and the relationships between process forces, spindle power and tool geometry were investigated. Twelve FSW tools with specifie…

A friction stir welding (FSW) methodology incorporating laser tracking and constant force control technologies was developed in order to fabricate large, thin-walled aircraft floor structures. The material chosen for study comprised sheet specimens …