About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fundamentals of Sustainable Metallurgy and Processing of Materials
|
| Presentation Title |
Design of Sustainable Al-Si Alloys for Structural Application |
| Author(s) |
Sunyong Kwon, Amit Shyam, Sumit Bahl, Ying Yang, Nicholas Richter, Alex J. Plotkowski, James Allen Haynes |
| On-Site Speaker (Planned) |
Sunyong Kwon |
| Abstract Scope |
For structural applications, Al-Si and Al-Mg alloys are the most suitable alloy classes due to their superior yield strength and ductility. Both alloy classes inherently contain appreciable amounts of Mg, Si, and Fe. However, commercial Al-Si alloys restrict Fe impurity content less than 0.25 wt% to suppress the primary β-AlFeSi phase formation that severely degrades ductility. The stringent Fe tolerance presents a significant barrier to accommodate more recycled aluminum in structural applications. This presentation introduces a new Al-Si alloy specifically designed to tolerate high content of Mg and Fe. The alloy chemistry was designed through high-throughput Scheil simulations, exploring over 300,000 alloy chemistries. We will present the microstructure and tensile property of this alloy. Furthermore, we will discuss the impact of Fe, Mg, and Mn impurities on the microstructure and phase stabilities in Al-Si alloys. This work was sponsored by the DOE Vehicle Technology Office’s Lightweight Metal Core Program. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Sustainability, ICME |