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…

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…

The friction stir disc welding (FSDW) process was developed to facilitate the production of high quality root welds, and the joint formation mechanism and the influence of tool rotation direction on joint properties were investigated. The FSDW set-u…

With regard to the occurrence of coarse alpha-Al dendrites, eutectic phase, shrinkage porosity and other defects in cast aluminium alloys, an investigation was undertaken into the influence of different combinations of friction stir processing (FSP)…

Neural-fuzzy modelling techniques were employed to develop a transparent model-based approach that creates linguistic indices directly from spectral-temporal FSW (friction stir welding) data in order to analyse the relationship between process param…

Use of friction stir welding (FSW) to replace mechanical fastening in fabrication of an aircraft component in the ROCT Project (Rib One with Crux and Tees) is described. Design is shown of the part, which was assembled using four butt welds from wro…

The influence of tool and plate positions on the friction stir welding of F82H ferritic/martensitic steel (0.1%C, 8%Cr, 2%W, 0.2%V, 0.04%Ta) and austenitic stainless steels 304 and 316 was investigated. Stainless steel compositions were: 304 (0.08%C…

A stationary shoulder friction stir welding (SSFSW) technique was developed for the joining of high temperature, low conductivity materials, and experimental results were obtained for butt and lap welds in Ti-6%Al-4%V alloys produced using 1D and 2D…

A high force, multi-axis friction stir welding (FSW) machine was employed to perform one-run welding experiments on thick plates (thickness 75 mm) of AA 6082-T6 alloys, and the hardness, microstructure and crystallographic texture of the joints were…

A review is presented of the growth in interest in friction stir welding (FSW) as measured by real industry applications and the distribution of related patent filings by time and geography, and case studies are reported to illustrate commonly occur…