About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Scandium Extraction and Use in Aluminum Alloys
|
Presentation Title |
New Scandium Containing Aluminium Welding Wires for Wire + Arc Additive Manufacturing |
Author(s) |
Thomas Dorin, Lu Jiang, Andrew Sales |
On-Site Speaker (Planned) |
Thomas Dorin |
Abstract Scope |
This work explores new welding wire compositions tailored for the emerging technology of Wire + Arc Additive Manufacturing (WAAM). The 5183 alloy is a commonly used welding wire as it provides strength through the presence of a high content of Mg through solid solution strengthening mechanism. These alloys experience a number of shortcomings such as medium strength compared to age-hardenable alloys and are prone to sensitisation when used in marine environment. This work uses co-additions of Sc, Zr and other transition elements to a 5xxx-series alloy to provide additional strengthening through the formation of L12 Al3X particles. The precipitation kinetics during a tailored heat treatment will be discussed. The impact on mechanical properties is evaluated with hardness and tensile tests. Atom probe tomography and transmission electron microscopy are used to better explain the role of the different elements on the formation kinetics of Al3X. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Additive Manufacturing, Aluminum, Characterization |