TWI Digital Library

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…

The Taguchi method was employed to determine optimum process parameters for friction stir welding of dissimilar joints between AA 6061 (Al, 0.84%Mg, 0.54%Si, 0.4%Fe, 0.24%Cu) and AA 7075 (Al, 5.58%Zn, 2.28%Mg, 1.6%Cu) aluminium alloys. Welding was p…

A pinless tool with involute grooves on its shoulder surface was designed to facilitate friction stir spot welding (FSSW) of 2024-T3 aluminium alloy (Al, 3.8-4.9%Cu, 1.2-1.8%Mg, 0.3-0.9%Mn) sheets (thickness 1.5 mm) and the influence of process para…

An integrated multi-physics model was employed to predict the temperature distribution, the post-weld grain size distribution and the local subgrain size distribution around the pin during friction stir welding (FSW) of 6061 aluminium alloys. The mu…

Models were developed for the temperature distribution and material flow during friction stir welding. Both friction and material shearing were presumed to generate heat, and finite element analysis was used to determine the temperature distribution…

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-…

Friction stir welding (FSW) is broadly recognized as an efficient solid-state welding technology to join light metal alloys and is worth considering expanding its technological benefits for joining materials with different chemical compositions and …

An investigation was undertaken to examine the use of an industrial serial robot incorporating dual loop force/position control to reduce the investment cost and increase process flexibility in friction stir welding (FSW) by compensating the lateral…

An investigation is presented into a systematic model based, real time process monitoring framework to analyse the performance and behaviour of the friction stir welding (FSW) process and into the framework's ability to predict weld quality threshol…

Metallographic observations, hardness distribution measurements and fatigue tests were undertaken to investigate the discontinuity state related to the crack nucleation site in butt joints fabricated in 2024-T3 aluminium alloys (Al, 3.8-4.9%Cu, 1.2-…

Various dissimilar butt joints were fabricated between 2017A-T451 (Al, 4.14%Cu, 0.72%Mg), 6082-T6 (Al, 1.03%Mg, 0.92%Si) and AlSi9Mg (Al, 8.6%Si, 0.31%Mg) aluminium alloys by friction stir welding using a high pin tool rotational speed (1400 or 1800…

The influence of the process parameters on the microstructure, mechanical properties and corrosion of friction stir welded aluminium alloy 2024-T3 was investigated. Sheets of 1.6 and 4 mm thickness were welded using rotational speeds of 800-2400 rpm…

In the realm of armor steels, the relationship between hardness and ballistic performance is crucial. Different hardness levels can lead to various modes of failure upon ballistic impact. However, when armor-grade steel plates undergo welding, the b…

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…