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…

Friction stir welded and TIG welded butt joints in aluminium alloy 6061 matrix B4C-reinforced (15-30% B4C) composites were compared. TIG welds were produced using a combination of aluminium alloys 4043 and 4047 as filler metal with pure Ar or a mixe…

The design and construction of a prototype fixture and a corner fixture for making 90 degree corner joints in aluminium alloys by friction stir welding (FSW) are described. The requirements for a FSW weld fixture are outlined. The fixtures were test…

The friction stir welding of copper for the production of spent nuclear fuel storage disposal canisters was investigated. Initial trials were conducted on UNS-C10100 plate of 10 mm thickness. The high temperatures required the use of a sintered tung…

Dissimilar lap joints between AlSi10MgMn aluminium alloy sheets (thickness 3 mm) and Al-Si coated Usibor 1500 22MnB5 hot stamped boron steel sheets (thickness 1.8 mm) were fabricated by friction stir spot welding (FSSW) under different processing co…

A review is presented of process development work undertaken with regard to a machine concept assessment and the realisation of a fully 3D-capable 5-axis parallel kinematic friction stir welding machine, a so-called pentapod, suitable for large and …

Friction stir processing (FSP) experiments were undertaken to modify the microstructure of Ti-6%Al-4%V parent metal specimens, in both alpha/beta and beta processed conditions, and TIG weld overlays deposited onto Ti, 6%Al, 4%V alloy using matching …

With regard to the dependence of welded joint properties on tool probe shape during friction stir welding (FSW) of dissimilar butt joints between aluminium and steel, an investigation was undertaken into the interface formation mechanism by conducti…

The application of friction stir welding to the construction of airframe structures of precipitation-hardened aluminium alloys, using butt, lap and T-joints, is described. A landing gear strut door was manufactured by welding an Alclad 7075-T6 skin …

Friction stir processing (FSP) experiments were undertaken on three Ni-based alloys (Alloy 625 (Ni, 21.6%Cr, 8.6%Mo, 3.7%Fe), Alloy 718 (Ni, 23.7%Fe, 18.1%Cr, 3.1%Mo, 1%Ti) and Hastelloy X (Ni, 21.3%Cr, 19.2%Fe, 8.3%Mo)) using a W-Re tool, process p…

Friction stir spot welding (FSSW) experiments were undertaken on sheet specimens of similar and dissimilar combinations of AA 2024-T3 (thickness 1.27 mm), AA 2024-O (2.2 mm) and AA 7075-T6 (1.27 mm) aluminium alloys under various process conditions,…

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…

Friction stir welding (FSW) experiments were conducted on Ti-6%Al-4%V (Ti, 6.32%Al, 4.08%V) and SP-700 (Ti, 4.37%Al, 2.93%V, 1.91%Fe, 1.9%Mo) alloy sheets (thickness 2 mm) in order to investigate the effect of process conditions on joint microstruct…

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…

The StiRoLight Research project (carried out in conjunction with SAAB, ESAB and Volvo) to investigate the use of an industrial robot for friction stir welding of aluminium alloys in the automobile industry, is outlined and studies of path deviations…

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 …

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 …

A brief review is presented of the RIFTEC welding job shop, a major supplier for friction stir welded components in Germany, and Hammerer Aluminium Industries (HAI) in Austria and some of their applications to railway, automotive and electronic indu…

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