Abstract
Material flow in friction stir welds has been visualised using embedded marker materials. The fidelity of the visualisation technique has also been demonstrated. Results from the flow visualisation show that the friction stir welding process can be roughly described as an in situ extrusion process wherein the tool shoulder, the weld backing plate, and the cold base metal outside the weld zone form an ‘extrusion chamber’ which moves relative to the workpiece. Deviation from this description occurs primarily at the top surface of the weld where significant material transport occurs owing to the action of the rotating tool shoulder. The transport caused by the shoulder leads to a small amount of circulation about the longitudinal axis of the weld with material moving primarily from trailing to leading sides at the top of the weld and primarily from leading to trailing near the middle and bottom of the weld.
Keywords
Friction stir weldingMaterials scienceMaterial flowWeldingExtrusionFlow (mathematics)MetallurgyBase metalComposite materialMechanics
Affiliated Institutions
Related Publications
Finite element simulation of material flow in friction stir welding
A brief summary of recent finite element simulation results for the friction stir welding process is presented. The focus of the present study is on the characterisation of mate...
Coupled thermomechanical analysis of friction stir welding process using simplified models
It is widely recognised that the fundamental mechanisms associated with the weld formation process and their relationships with welding parameters are complex and remain to be f...
Intercalation vortices and related microstructural features in the friction-stir welding of dissimilar metals
Dissimilar plates (0.6 cm thick) of copper and 6061 aluminum alloy; and 2024 aluminum alloy and 6061 aluminum alloy were friction-stir welded at various rotation speeds (400–120...
Publication Info
- Year
- 2000
- Type
- article
- Volume
- 5
- Issue
- 2
- Pages
- 120-124
- Citations
- 250
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
250
OpenAlex
Cite This
A. P. Reynolds
(2000).
Visualisation of material flow in autogenous friction stir welds.
Science and Technology of Welding & Joining
, 5
(2)
, 120-124.
https://doi.org/10.1179/136217100101538119
Identifiers
- DOI
- 10.1179/136217100101538119