TWI Digital Library

An investigation is presented into the influence of friction stir welding (FSW) process parameters (tool rotation speed and feed rate) on the mechanical properties and microstructure of welded joints of AA2095 (Al, 4.6%Cu, 1.14%Li) in as-welded and …

An experimental study was carried out to investigate friction stir welded lap joints in AA-6082 aluminium alloy sheets in order to determine methods to improve weld quality; the experiments were performed using two different types of probe, the MX-T…

An investigation is presented into the joint efficiency and tensile properties of welded joints in various structural aluminium alloys prepared by friction stir welding (FSW), looking at the effects of compositional differences in the parent metals …

A presentation is made of a successful demonstration of the friction stir welding (FSW) of steel capabilities in a shipyard production facility, summarising the equipment, fixturing and tooling requirements. HSLA-65 steel panels (17m x 2.4m), 6mm th…

A friction stir welding (FSW) process based on the use of a self-reacting pin tool (SRPT) was developed for the joining of solid and hollow extrusions for aluminium railway car body structures; the mechanical properties of welded joints were investi…

Butt joints were fabricated in AA 2219-T87 aluminium alloy panels (thickness 6.35 mm) by friction stir welding (FSW), and force data collected during welding were analysed using an unsupervised matched filter technique to classify weldment segments …

Butt joints were fabricated in AA 6061-T6 (Al, 0.8%Mg, 0.6%Si) and AA 6082-T6 (Al, 0.62%Mg, 0.99%Si, 0.49%Mn) plates (thickness 6 mm) by friction stir welding, and the tensile and fatigue properties of the weldments were investigated. The microstruc…

Dissimilar butt and lap joints between AA 5083-H111 or AA 6082-T6 aluminium alloys and copper were fabricated by friction stir welding and morphological, metallographic and structural analyses were undertaken on weldments made under a range of proce…

The development of an industrialised robot for friction stir welding (FSW) for aluminium alloys is described. The influence of the main processing parameters, plunging and rotational speeds, on FSW performance and efficiency were investigated. The q…

In relation to the occurrence of abnormal grain growth in aluminium alloy spun formed dome development using friction stir welded (FSW) blanks, an investigation is presented into tensile tests performed on two AA 2195 (Al, 4%Cu, 1%Li) FSW parameter …

A silicon nitride (Si3N4) tool with a threaded pin was used for friction spot joining of ultralow carbon (0.004-0.01%C, 0.1-0.16%Mn) and DP 590 grade dual-phase high-strength steel (0.06%C, 0.49%Si, 1.23%Mn) sheets, and the microstructure and mechan…

Friction stir spot welding (FSSW) was performed on dual phase 800 high strength automotive steel (0.14%C, 0.23%Si, 1.52%Mn) to establish the effect of tool rotation speed (750-2400 rpm) for a number of weld cycles featuring different Z-axis plunge r…

With regard to the production of aluminium alloy T joints for stiffened panel construction by friction stir welding (FSW), an investigation is presented into the fabrication of FSW T joints with AA 6082-T6 alloys and the influence of welding paramet…

Simultaneous double-sided friction stir welding (DFSW) experiments were undertaken on AMX 602 alloys (Mg, 6%Al, 0.5%Mn, 2%Ca) and the influence of diverse material flows caused by differing process parameters (rotation direction and travel speed) an…

Friction stir welding was employed to fabricate dissimilar joints between 5A06-H112 aluminium alloy (Al, 5.8-6.8%Mg, 0.5-0.8%Mn) and 304L stainless steel (0.03%C, 18-20%Cr, 8-11%Ni) and material flow behaviour was investigated by microstructure obse…

With regard to the fabrication of hollow structures by the inversion friction stir welding (IV-FSW) technique, welded joints were fabricated in A-1050 and A-6061 aluminium alloy and SPCC steel sheets (thickness 2 mm) by IV-FSW and their surface appe…

Defects and their mitigation associated with the fabrication of fluid-cooled aluminium alloy heatsinks for electronic applications are discussed. The heatsink consisted of an aluminium alloy 6063 substrate (310 x 300 mm) with a series of rectangular…

Arcan tests (pure tensile, pure shear and mixed tensile/shear loads) were performed on parent material (6056-T78 aluminium alloy) and friction stir welded (FSW) specimens for comparison purposes and to assess the capability of strain field measureme…

Friction stir welding (FSW) experiments were performed on 6005A-T6 (Al, 0.49%Mg, 0.61%Si) alloy plates (thickness 6 mm) using a fully instrumented CNC milling machine, and the microstructure and mechanical properties of the welded joints were invest…

Stationary shoulder friction stir welding (SSFSW) and conventional FSW experiments were undertaken on AA 7050-T7651 alloy plates (thickness 6.3 mm) to demonstrate the advantages of SSFSW with respect to surface finish, thermal profile symmetry, HAZ …