About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Frontiers in Solidification X
|
| Presentation Title |
Real-time investigation of intermetallic phase growth in thin samples of dilute Al-Fe-Si-Mn alloys under directional solidification. |
| Author(s) |
Sabine Bottin-Rousseau, Eliane Farhi, Bumedijen Raka, Kamal Sbargoud, Silvère Akamatsu, Philippe Jarry, Christine Nardin, Georges Salloum-Abou-Jaoude |
| On-Site Speaker (Planned) |
Sabine Bottin-Rousseau |
| Abstract Scope |
In the context of aluminum alloy recycling as part of the environmental transition, one strategy involves using post-consumer scrap, which contains higher levels of impurities—particularly iron (Fe) and silicon (Si). These impurities promote the formation of faceted intermetallic (IM) inclusions during solidification.
To better understand the physical processes at play, it is essential to observe directly the formation of typical growth microstructures involving Al-Fe-Si intermetallics under well-controlled conditions.
We present an in situ experimental study using directional solidification of model Al-Fe-Si-Mn-based alloys in thin samples. Real-time dual-optics imaging enables direct observation of nucleation and growth of IM crystals under well-controlled solidification conditions over a large temperature range. This method is combined with ex situ crystallographic and chemical analysis. By this way, different growth shapes of primary and secondary IM crystals are identified, and their dynamics analyzed in terms of diffusive coupling with the aluminum solidification front. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Solidification, Recycling and Secondary Recovery |