TWI Digital Library

SiC particle reinforced 2124Al metal matrix composite (MMC) plates (thickness 8 mm) were joined by friction stir welding (FSW) and the relationship between process parameters, weld defect formation and joint mechanical properties was investigated. T…

The microstructures and strengthening mechanisms during friction stir processing (FSP) of AZ91 (Mg, 9%Al, 1%Zn) die-cast and Mg-Y-Zn (Mg, 5.9%Y, 2.6%Zn and Mg, 5.5%Y, 4.3%Zn) cast alloys were investigated and the effect of second phase particle disp…

Numerical simulation of the friction stir welding (FSW) process was undertaken by means of an arbitrary-Lagrangian-Eulerian (ALE) formulation and a fully coupled thermomechanical analysis was performed to account for the heat flux generated by plast…

Friction stir spot welding (FSSW) was employed to fabricate lap joints in hot extruded AZ31 magnesium alloy sheets (thickness 2 mm), and the effect of introducing nanostructured SiC particles (mean size 40 nm) on the microstructure and mechanical pr…

Quantification approaches applied to phase space data generated from friction stir welding aluminium alloys under varying process conditions are reported. A multi-step, micro-wormhole, non-destructive evaluation phase-spaced, (PS) algorithm that com…

An investigation is presented into pore formation and grain growth in aluminium alloys during TIG welding after friction stir welding (FSW), for reasons of repair or fabrication, and into two methods to suppress these problems. The material studied …

AA 2219-T87 (Al, 5.8-6.8%Cu, 0.2-0.4%Mn) aluminium alloy plates (thickness 8 mm) were joined by friction stir welding (FSW) and their microstructure, mechanical properties and corrosion behaviour were investigated. FSW experiments were conducted usi…

In relation to the development of "AIRWARE" technology based on Al-Cu-Li alloys for aircraft structural parts, a report is presented into the friction stir welding (FSW) of "AIRWARE" 2050 alloys, mechanical characterisation of welded joints, and ind…

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…

An investigation is presented into the development of polycrystalline cubic boron nitride (PCBN) and composite W-Re alloys with PCBN and diamond reinforcement as tool materials for friction stir welding of high temperature materials. High-pressure, …

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…

Friction stir welding (FSW) was employed to fabricate dissimilar joints between 1060 aluminium alloys and commercially pure Cu under various process conditions and microstructure and mechanical properties studies were conducted to investigate interm…

Low temperature post weld ageing heat treatment, with and without deep cryogenic pretreatment, was applied to friction stir welded joints of 2024-T351 (Al, 4.3%Cu, 1.6%Mg, 0.7%Mn) alloys, and the microstructure and mechanical properties of the joint…

A conceptual model was developed to describe the relationship between process variables and physical properties such as spindle torque, heat generation and workpiece temperature distribution for friction stir welding of aluminium alloys. The materia…

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…

With regard to the dependence of shoulder friction generation in bobbin friction stir welding on the interference (compression) between the substrate and the tool, an investigation was undertaken into the effects of different interference (compressi…

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…

A comprehensive microstructural investigation, incorporating SEM, TEM, STEM (scanning transmission electron microscopy) and EBSD (electron backscattering diffraction), was undertaken on PM 2000 (Fe, 20%Cr, 5.5%Al, 0.5%Ti, 0.5%Y2O3) ODS (oxide disper…

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…