TWI Digital Library

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…

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…

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…

Friction stir welding (FSW) of 2219-T6 aluminium alloys (Al, 6.48%Cu) was undertaken with the assistance of micro-plasma arc preheating, and welding efficiency as well as joint microstructure and mechanical properties were investigated. Longitudinal…

The feasibility of friction stir welding (FSW) HSLA-65 steel (0.10%C, 1.4%Mn), which is being considered by the US Navy for ship structural applications, was assessed. Single-pass FSW was performed on 6.4 mm (0.25 in) plates and two-pass FSW was per…

Friction Stir Welding (FSW) is a relatively new technique which utilizes frictional heating combined with a forging pressure to produce virtually defect-free high strength bonds. Although considerable experimental work has been reported in the liter…

An finite element method (FEM) model, considering variables such as tensioning level, heat input and sheet geometry but ignoring mechanical tool effects, was developed to investigate the efficacy of the mechanical tensioning technique for controllin…

With regard to the development of friction stir shaping as a modified friction stir welding (FSW) process to maximise material flow within the weld zone and redistribute it into new shapes or features outside of or on top of the weld zone, an invest…

An investigation is presented into the fatigue characteristics of friction stir welded (FSW) lap joints made from artificially aged Al alloy 6082 (Al, 0.6-1.2%Mg, 0.7-1.3%Si) using a tool based on the "Triflute" concept with either convex or concave…

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…

A feasibility study was undertaken to investigate the use of friction stir welding to join B4C particle reinforced Al metal matrix composite plates (thickness 8 mm) that form the neutron absorber tubes of the basket of a spent nuclear fuel cask. Wel…

Butt joints were fabricated by friction stir welding (FSW) in 4340 steel (0.43%C, 0.69%Mn, 0.76%Cr, 1.76%Ni, 0.24%Mo, 0.43%V, 0.16%Cu) and between 4340 steel and Inconel 718 (Ni, 17-21%Cr, 4.7-5.5%Nb, 2.8-3.3%Mo) and their microstructure and mechani…

A review is presented of the development programme to achieve a production-ready procedure to manufacture copper canisters for Swedish radioactive waste storage using friction stir welding (FSW) for encapsulation, incorporating adaptive thermal mana…

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…

This research studies a hybrid method of manufacturing of porous alloy/ foam or functionally graded porous alloys with the help of a hybrid process of friction stir processing followed by microwave post-processing. The manufacturing productivity of …

8th International Symposium, 18-20 May 2010, Session 5A: Industrial Applications 1, Paper 03

Advances in low cost, rapidly re-configurable fixturing and support tooling for the production of complex curvature parts by friction stir welding are described. An Intelligent Friction Stir Welding (IFSW) path planning algorithm developed by the So…

The friction stir welding of chromium steel (12%Cr) and of the dissimilar combination of chromium steel with low carbon steel were investigated, and the process economics compared with those of MMA, MIG and submerged arc welding. Welds were made in …

In relation to the application of friction stir welding (FSW) to the production of metallic aircraft fuselages, a report is presented into the evolution of the MUVAX (multi use vacuum assisted exoskeleton) concept within the framework of the LuFo V-…

Dissimilar joints between 2017A-T451 (Al, 4.14%Cu, 0.72%Mg, 0.68%Si) and AlSi9Mg (Al, 8.6%Si, 0.64%Fe, 0.34%Mn, 0.31%Mg) aluminium alloys were fabricated by a friction stir welding process featuring different rates of rotation of the pin and shoulde…