Abstract
This work aims to study the influence of the tool rotational speed and tool traverse speed on dissimilar friction stir butt welds on 3 mm thick AA5083 to commercially pure copper plates. Complex microstructures were formed in the thermo-mechanically affected zone, in which a vortex-like pattern and lamellar structures were found. Several intermetallic compounds were identified in this region, such as Al2Cu, Al4Cu9 and these developed an inhomogeneous hardness distribution. The highest ultimate tensile strength of 203 MPa and joint efficiency of 94.8% were achieved at 1400 rpm tool rotational speed and 120 mm/min traverse speed. Placing the softer material (aluminium) on the advancing side produced an excellent metallurgical bond with no requirement for tool offsetting.
| Original language | English |
|---|---|
| Pages (from-to) | 11968-11979 |
| Number of pages | 12 |
| Journal | Journal of Materials Research and Technology |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| State | Published - 2020 |
Bibliographical note
Publisher Copyright:© 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords
- AA5083
- Commercially pure copper
- Dissimilar joining
- Friction stir welding
- Intermetallic compounds
- Mechanical properties
ASJC Scopus subject areas
- Ceramics and Composites
- Biomaterials
- Surfaces, Coatings and Films
- Metals and Alloys