TWI Digital Library

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 …

An experimental study was carried out to investigate the effect of welding conditions on weld macrostructure and the microstructure and mechanical properties of the nugget zone in welds in AA-7010 aluminium alloy made by friction stir welding (FSW).…

AA 6063-T5 aluminium alloy L-shape stringers (thickness 2 mm) were friction stir welded in an overlap configuration positioned over AA 2024-T3 sheets (thickness 3 mm) using various process conditions and three different tool designs with respect to …

To better understand the heat generation, temperature distribution and material flow during friction stir welding (FSW), experiments, including some with a pin breaking technique, were undertaken on two aluminium alloys (5083-O (Al, 4.5%Mg) rolled p…

A report is presented into the friction stir welding (FSW) fabrication of an aluminium deck for a pedestrian bridge over the Petite Decharge river (Alma, Quebec, Canada), incorporating the design and manufacturing of extrusions, FSW tools and a syst…

Thermomechanical and microstructural modelling were performed for the friction stir welding process, simulating the thermal diffusion during and after welding (in the cooling stage), and comparing the results with experimental data obtained for fric…

A numerical simulation is presented for the development and integration of a pin tool for friction stir welding (FSW) of aluminium alloys. The Triflute tool design was optimised. The macro- and microstructure of lap joints in A6N01 alloys were studi…

An approach to welded joint inspection incorporating in situ characterisation of weld quality was developed to facilitate the detection of discontinuities (e.g. voids and volume defects) during friction stir welding (FSW). FSW experiments were perfo…

Friction stir welding (FSW) using a milling machine was employed to join AA-6063-T6 alloy (Al, 0.51%Mg, 0.42%Si) pipes (diameter 110 mm, thickness 5 mm) with the aim of eliminating ploughing problems, and weld zone microstructures were studied as a …

The electrically assisted friction stir welding (EAFSW) technique, in which an electric current is fed through the workpiece to soften the metal by means of ohmic heating, is described and some trial experimental results are reported. The initial EA…

A numerical model based on the finite element method and axisymmetric thermo-elastic-plastic analysis was developed to describe the refill friction stir spot welding (RFSSW) process and to predict the temperature distribution in welded joints as a f…

Friction stir welding (FSW) experiments were undertaken on pure aluminium (A1050) sheets (thickness 5 mm), and the material flow during welding was visualised in 3D by x-ray radiography using a tiny spherical tungsten tracer. FSW was performed in po…

Finite element models of the friction stir welding of aluminium alloys are reviewed and the results compared with experimental measurements. Contact between the pin and the workpiece is considered in two ways: frictional contact; or assuming the mat…

The use of a new tool material, polycrystalline cubic boron nitride (PCBN), developed by Brigham Young University in association with Advanced Metal Products, for friction stir welding (FSW) high-temperature materials was investigated. The manufactu…

A new aluminium-bodied, mid-engined AUDI sports car is the first serial application for friction stir welded tailored blanks worldwide. 6th International Symposium, 10-13 Oct 2006, Session 9B: Modelling II, Paper 03

Dissimilar joints between AA 6060-T5 aluminium alloy plates (thickness 6 mm) and Ti-6Al-4V titanium alloy sheets (thickness 2.5 mm) were fabricated by friction stir lap welding (FSLW) and the influence of interface microstructures on the value of ma…

The microstructure, crystallographic texture and grain distribution were determined in a transverse cross section of a friction stir weld and in a plan-view section through the embedded friction stir welding (FSW) tool. The weld was obtained by FSW …

Friction stir welding was employed to fabricate welded joints in Ni-free 18%Cr, 2%Mo, 0.85%N austenitic steel sheets (thickness 3 mm) and the gradient characteristics of the microstructures and mechanical properties were investigated along transvers…

The concept and theoretical principles of friction flow welding are presented. Numerical simulation using 'Deform-3D' software was used to compared and optimise the process. The applicability of friction flow welding to different aluminium alloys wa…

A thermomechanical finite element model of the friction stir welding process, which considered temperature distributions in the workpiece and tool loadings, was developed and validated by comparing the model simulations with experimental data for th…