TWI Digital Library

Dissimilar butt joints were fabricated between two aluminium alloys, 2017A-T451 (Al, 4.14%Cu, 0.72%Mg) and AlSi9Mg (Al, 8.6%Si, 0.31%Mg), by friction stir welding (FSW) using a dual-speed tool and their microstructure and mechanical properties were …

An investigation was carried out in order to examine the feasibility of producing friction stir welded FSW T-joints using the corner fillet geometry. A specific tool comprising a rotating pin (made of MP159) with a 45 degree inclination to the two p…

A discussion is presented on the development of a FSW process for the welding of thin gauge aluminium alloy lap joints in the fuselage and wing sections of the Eclipse 500 twin-engine jet aircraft. The issues of pin tool geometry for use on lap join…

Friction stir processing (FSP) was employed to fabricate oxide dispersion strengthened copper composites and the microstructure and mechanical properties of the materials were investigated in order to clarify the effect of process parameters on mate…

A device was designed and manufactured to facilitate accurate monitoring of forces, torque and tool temperature during friction stir welding (FSW) and for use as a weld quality indicator in relation to issues such as tool wear, lack of tool penetrat…

In the last fifteen years, friction stir welding has developed from a laboratory curiosity to an important fabrication technique for lightweight, lower softening temperature alloys. Industrial implementation of joining magnesium has been limited alm…

A simultaneous double sided corner Ad-Stir fillet stationary shoulder friction stir welding (SSFSW) process was developed for LNG (liquefied natural gas) storage tank construction. The microstructure and mechanical properties of welded joints were i…

The SCIENZE (Supply Chain Innovation Engineering for Net Zero) Project aims to create a UK based supply chain that is capable of manufacturing the next generation of power electronic components at volumes higher than is currently feasible to do toda…

Abrasion circle and modified refill friction stir spot welding (FSSW) techniques were employed to fabricate dissimilar joints between 6111-T4 (Al, 0.75%Mg, 0.69%Si, 0.75%Cu) and AZ31 (Mg, 3%Al, 1%Zn, 0.5%Mn) alloy sheets (thickness 0.9 mm) with the …

The feasibility of using friction stir welding (FSW) in the construction of an aircraft central wing box from butt-welded extrusions was evaluated. An FSW procedure for welding 7055 T77511 and 7349 T6511 10 mm thickness extrusions was developed by T…

The friction stir welding (FSW) process was determined for stiffener to skin lap joints of different aluminium alloys (similar 2024 T3, similar 2139 T3 and T8, dissimilar PA 765 T79 extrusion on 2139 T8 skin) and FSW procedures with retractable pin …

A friction stir welding (FSW) methodology, incorporating Taguchi quality engineering to optimise process parameters, was developed to fabricate a cold plate consisting of copper pipe embedded in the machined groove of a 6061 aluminium alloy base pla…

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 effect of process parameters during the plunge stage of friction stir welding were examined as part of the development of industrialised friction stir welding equipment. The effects of the tool plunging speed and the rotational speed on the maxi…

An ultrasound assisted friction stir welding (UA-FSW) technique was employed to fabricate butt joints in similar Al/Al and dissimilar Al/Mg sheets, and the influence of ultrasonic oscillations on weld zone microstructure and mechanical properties wa…

Control equipment for the friction stir welding process was developed and evaluated for the production of a 8.4 m (27.5 ft) diameter, 0.32 in (8.13 mm) wall thickness 2195-T8 aluminium alloy space vehicle external fuel tank. The use of a computer-ba…

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…

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 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…