| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Zirconium Addition to Wrought Al-Mg-Si Alloys on Microstructure |
| Author(s) |
Florian Schmid, Thomas Ebner, Peter J. Uggowitzer, Stefan Pogatscher |
| On-Site Speaker (Planned) |
Florian Schmid |
| Abstract Scope |
Increasing the recycling rates as a key action to reduce global CO2 emissions, alloy manufacturers are confronted with a wider variation of elements, that can act either positively or negatively. During thermo-mechanical production, manganese, iron or chromium are common to control the microstructure evolution by forming stable precipitates that can effectively hinder grain boundary motion via Zener-pinning. In a similar way, Zr forms Al3Zr-precipitates, which show an even increased potential to stabilize the microstructure and act resistively against recrystallization. However, Zr tends to increase cast grain size. This study evaluates the impact of Zr on conventional grain refiner in combination with different amounts of Fe and Mn. Microstructure evolution during thermo-mechanical treatment is examined by optical and electron microscopy. Results are discussed in terms of grain size, recrystallization tendency and Al3Zr precipitate density. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |