| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Scandium Extraction and Use in Aluminum Alloys
|
| Presentation Title |
Effect of Thermomechanical Processing on Microstructure and Properties of Sc/Zr-Containing AA5083 Rolled Alloys |
| Author(s) |
Ahmed Algendy, Paul Rometsch, X. Grant Chen |
| On-Site Speaker (Planned) |
X. Grant Chen |
| Abstract Scope |
This study investigated the effects of thermomechanical processing on the microstructure and properties of Sc/Zr-containing AA5083 rolled alloys. The results revealed that a small addition of 0.1 wt.% Sc enhanced the strength and recrystallization resistance across different process conditions. A low hot-rolling temperature resulted in superior tensile properties compared to a high hot-rolling temperature. This was attributed to a decreased coarsening and dissolution of nanosized L12-Al3(Sc,Zr) precipitates at the lower hot-rolling temperature. The yield strength of the Sc/Zr-containing alloy reached 305 MPa in the H321-temper, representing a 33% improvement over the base alloy. Moreover, adding 0.1 wt.% Sc increased the recrystallization temperature to 500 °C, compared to only 250 °C for the base alloy, due to the strong pinning effect of Al3(Sc,Zr) nanoparticles. These findings demonstrate that microalloying AA5083 with Sc significantly enhances the mechanical properties, and that the strength can also vary significantly depending on the thermomechanical process conditions. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Characterization, Mechanical Properties |