TWI Digital Library

A modified Gleeble hot torsion test was used to simulate the stir zone microstructures in types 304L and 310 stainless steels obtained during friction stir welding (FSW). A Gleeble 3800 with a torsion mobile conversion unit was used to perform the t…

In relation to the application of ferritic/martensitic steels as cladding and duct materials in advanced nuclear reactors, an investigation is presented into the friction stir welding of P91 high alloy steel (0.11%C, 0.45%Mn, 8.41%Cr, 0.96%Mo) plate…

Friction stir welding (FSW) was employed to fabricate overlap joints in thin AA 7075-T6 aluminium alloy (Al, 5.1-6.1%Zn, 2.1-2.9%Mg, 1.2-2%Cu) sheets (thickness 0.8 mm) coated with an anticorrosive aluminium layer and the microstructure and mechanic…

Using a pin tool made from relatively low cost metallic materials, including heat resistant alloys (e.g. Ni-Cr) with or without surface treatment, suitable conditions were investigated for friction stir welding (FSW) of commercially pure (CP) titani…

Tensile tests, computed tomography and documentation of process forces were employed to investigate the weldability of 1.4310 austenitic stainless steel reinforced extruded AW-6060 alloy (Al, 0.35-0.6%Mg, 0.6%Si) by friction stir welding, and the re…

Following a brief overview of the state of the art and applications for FSW of aluminium and Al alloys, experience and activities with this process at TWI Ltd (UK) are introduced. Principles, advantages and applications are presented of some process…

The influence of tool geometry and process conditions on the lap shear strength, weld integrity and efficiency during friction stir spot welding of magnesium alloys for automotive applications was investigated. The macro- and microstructures and wel…

With regard to the development of spin-formed domes for aerospace cryogenic fuel storage tanks, an investigation is presented into a friction stir welding (FSW) process for AA 2219 and AA 2195 aluminium alloys and the influence of FSW tool and proce…

Friction stir welding trials, comprising double-sided butt welding of plates of thickness 10-11 mm, were conducted to investigate the weldability of copper and its alloys and to determine the correct process parameters (welding and rotation speeds) …

Ultrafine grained test pieces of aluminium, copper and steel produced by the accumulative roll bonding process were friction stir butt welded at various revolutionary pitches, and the microstructures and mechanical properties (tensile strength, Vick…

Thick section friction stir welds were made in 25.4 mm (1 in) 5083-H131 and in 18.4 mm 2195-T8P4 aluminium alloy plates by single-pass friction stir welding (FSW) using new welding tool designs. The alloys are used for aerospace applications. The sh…

Friction stir welding of UK Ministry of Defence Def Stan 95-22 7017 aluminium alloy (Al, 4.5%Zn, 2.0%Mg) armour plate was evaluated by studying the mechanical properties and cracking of welded joints. Initially plate of 10 mm thickness, locally redu…

A description is presented on the friction stir welding (FSW) equipment developed for the joining of thin gauge complex-contour aluminium structures for the construction of the Eclipse 500 twin-engine jet aircraft. The design and capabilities of the…

The effects of post weld heat treatments on the mechanical properties and corrosion resistance of friction stir welded dissimilar aluminium alloy joints (2024/6056) were studied. Sheets of 4 mm thickness were first joined in heat treatments T3 for 2…

An investigation is presented into the effect of frictional heating on joint behaviour during friction stir welding (FSW) between aluminium alloy 6063 and mild steel S45C, the cross-section microstructure of the weld interface, and the welding mecha…

The friction stir welding of dissimilar aluminium alloys for the production of aircraft structural components was investigated. Welds were made between alloys 7040 and 7449 pre-aged to obtain a defined temper after post-weld ageing. Alloy 7040 was a…

The effects of friction stir welding (FSW) parameters and tool geometry on the forces and torques generated during the FSW of four aluminium alloys were studied. The alloys were 6082-T6 (6.45 mm), 5083-H111 (6.55 mm), 2014-T6 (5.9 mm) and 7075-T7351…

The decision to use friction stir welding (FSW) in the manufacture of aluminium alloy car wheels by Simmons Wheels, Sydney, Australia is described. Rim sections are formed from alloy 6061 in thicknesses of 4-6 mm. These are attached to cast or forge…

A study was conducted to assess friction stir spot welding (FSSW), to identify and investigate the effects of the principal FSSW parameters and to investigate the effectiveness of common friction stir welding (FSW) tool designs when used for FSSW. A…

An experimental study was carried out to investigate the effect of friction stir processing (FSP) on the microstructure and mechanical properties of fusion welded aluminium alloys. MIG welds in plates of thickness 6 mm of 5083-H321 aluminium alloy (…