| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Si impurities on the microstructural development of a cast Al-Mg-Fe alloy |
| Author(s) |
Nicholas Allen Richter, Sumit Bahl, Ying Yang, Alice Perrin, Alex Plotkowski, James Allen Haynes, Amit Shyam |
| On-Site Speaker (Planned) |
Nicholas Allen Richter |
| Abstract Scope |
The development of sustainable aluminum (Al) alloys is growing in industrial relevance, yet the implementation of secondary cast Al alloys in structural applications remains a challenge due to ductility limitations. Impurity content induced microstructural development is intimately linked with the resulting tensile properties of recycled cast Al alloys. However, minimal literature exists centered around recycling of cast Al-Mg alloys. Here, we investigate the influence of Si impurities on the microstructural and phase development in high Fe-content cast Al-4.3Mg-1.6Fe alloys to simulate the addition of high Si containing scrap material. Electron microscopy, X-ray diffraction and thermodynamic modeling were combined to quantify the evolving intermetallic phase content. Tensile tests link the microstructural and phase development to the resulting mechanical properties. Both CALPHAD modeling and tensile results highlight the important role of primary Al13Fe4 intermetallic platelets on ductility of Al-Mg-Fe-Si alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Sustainability, Mechanical Properties |