About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Scandium Extraction and Use in Aluminum Alloys
|
Presentation Title |
Effect of Cooling Rate on W-phase Formation in Al-Cu-Sc Alloys |
Author(s) |
Austin DePottey, Lu Jiang, Thomas Dorin, Thomas Wood, Timothy Langan, Paul Sanders |
On-Site Speaker (Planned) |
Austin DePottey |
Abstract Scope |
Aluminum-copper-scandium alloys show significant potential for high strength applications; however, the formation of the detrimental W phase (nominally Al8Cu4Sc) has prevented commercial adoption. There is not a strong consensus as to what conditions lead to the formation of W phase, but two key factors are the cooling rate during solidification and the homogenization heat treatment. In this work, the effect of cooling rate on the formation of W phase in Al-Cu-Sc alloys is investigated utilizing wedge molds that produce solidification rates from ~0.25-100 K/s. Samples are examined in both the as-cast state and following homogenization and aging treatments. |
Proceedings Inclusion? |
Planned: Light Metals |
Keywords |
Aluminum, |