About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Scandium Extraction and Use in Aluminum Alloys
|
Presentation Title |
Use of Sc to Improve the Properties of AA5083 Cast and Rolled Products |
Author(s) |
Paul Rometsch, Jerome Fourmann, Emad Elgallad, X.-Grant Chen |
On-Site Speaker (Planned) |
Paul Rometsch |
Abstract Scope |
The properties of 5xxx aluminum alloys can be improved with small additions of Sc. When Sc and Zr are added to 5xxx alloys, the alloys become heat-treatable as Al3(Sc,Zr) nanoprecipitates form at 300-400°C. However, the heat treatment and thermo-mechanical processing (TMP) need to be adapted to maximize the value of the Sc addition. In this work, AA5083 slabs were DC cast with and without minor additions of Sc and/or Zr. The room/elevated temperature mechanical properties of the cast materials were evaluated after various annealing and homogenization treatments. Samples were then hot and cold rolled with different TMP treatments. The microstructure, room temperature mechanical properties and corrosion performance were evaluated for selected tempers. It was evident that the properties could be improved significantly with small additions of Sc, but that this depends very much on the amount of Sc and on the processing parameters. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, Mechanical Properties, Other |