TWI Digital Library

Friction stir welding trials were undertaken on AA 7075-T7351 aluminium alloy plates (thickness 9.525 mm) to investigate the influence of backing plate characteristics on heat input and cooling rate. Experiments were performed on an MTI RM2 friction…

Friction stir welding was used to produce a space shuttle external barrel section of 2195-T8 Al-Cu-Li alloy. Seven panels (joint thickness of 8.1 mm (0.32 in)) were joined to form a barrel 8.4 m (27.5 ft) in diameter and 4.6 m (15 ft) long. A comput…

The principles are presented of stationary shoulder friction stir welding (FSW) with examples of the weld microstructures that can be achieved. Trials were conducted on 6.35 mm plate of Ti-6%Al-4%V titanium alloy, with spindle speed of 400 rpm and t…

Two friction stir welding (FSW) procedures, a sacrificial anvil method and a hybrid FSW/arc welding technique, were developed to assure consistent full penetration welds during the construction of offshore and onshore pipelines, respectively. The of…

Microstructural and textural variations in friction stir weld-affected regions of near-alpha Ti-5111 alloys (Ti, 5%Al, 1%Sn, 1%Zr, 1%V, 0.8%Mo) were investigated experimentally and a model incorporating micro-shear banding was proposed to account fo…

Aluminium alloy 7050-T751 was friction stir welded using a range of process parameters, and finite element analysis was used to calculate the time-temperature distributions so that the resultant weld properties could be related to the welding parame…

A finite element model based on a staggered thermo-fluid solution scheme was employed to investigate flow around friction stir welding (FSW) tools, "MORFEO" code simulations were undertaken to predict flow patterns and temperature distribution in th…

Friction stir welding (FSW) was employed to join partially recrystallised AA 5052 (Al, 2.3%Mg) sheet specimens (thickness 5 mm) and the relationship between microstructural development, mechanical properties and process parameters was investigated. …

The use of friction stir welding for the repair of cracks in aluminium alloy 2024 aircraft wing skin structures, and the repair fatigue life were investigated. An artificial crack, 42 mm in length, in a flat section 2024-T351 alloy of 3.2 mm thickne…

An investigation was made of approaches to tool design for the self reacting pin tool (SRPT) (bobbin tool) to mitigate the effects of friction stir welding owing to enlarged grains that occur in large structural extrusions, in order to yield accepta…

Flow in friction stir welds in Al-Cu-Li aluminium alloy 2195-T8 plate (8.1 mm thickness) was observed by placing markers in the faying surface prior to welding. Markers of aluminium alloy 5454-H32 (1.8 x 2.7 mm) were placed in slots milled in the fa…

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 …

A review is presented of FSW (friction stir welding) tool design parameters and their relationship with heat generation, material flow and weld quality, including discussions of interaction mechanisms between tool and specimen, typical tool designs,…

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 modification of a thermally sprayed cemented layer of WC-CrC-Ni (WC-20%CrC-7%Ni) and WC-Co (WC-12%Co) using friction stir processing (FSP) was investigated. Layers of WC-CrC-Ni and WC-Co were sprayed onto SKD61 substrate (17 mm thickness) by HVO…

Developments in non-destructive techniques for detecting small defects in friction stir welds in thin aluminium plates in aerospace applications are considered. The principles of ultrasonic phased-array technology and eddy current array technology a…

In relation to the potential of force control friction stir welding (FSW) to produce higher quality weldments, an investigation is presented into the integration of closed-loop force control onto milling machines using popular CNC control systems, f…

A description is presented of the development of an aircraft adapter pallet system for the rapid deployment of supplies and equipment for use by the US Army. The pallets consisted of seven lightweight AA-6005A aluminium alloy (Al, 0.4-0.7%Mg, 0.5-0.…

An experimental investigation was conducted into the effects of friction stir processing (FSP) and post-FSP ageing on the microstructure and mechanical properties of Alloy 718 castings. Bead-on-plate welds were fabricated on cast Alloy 718 sheets (t…