About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Circular Metallurgy: Design, Technology, Application
|
| Presentation Title |
CALPHAD-Based High-Throughput Investigation of Fe-Containing Intermetallic Formation in Al–Si–Mg–Fe–Mn–Cr Alloys for Aluminum Recycling |
| Author(s) |
Song-Mao (Simon) Liang, Chuan Zhang, Kamalnath Kadirvel, Shuanglin Chen, Weisheng Cao, Fan Zhang |
| On-Site Speaker (Planned) |
Song-Mao (Simon) Liang |
| Abstract Scope |
The Al–Si–Mg–Fe–Mn–Cr alloy system is systematically investigated through CALPHAD-based high-throughput calculations to understand and control the formation of Fe-containing intermetallic phases—an essential factor in improving the recyclability and performance of secondary aluminum alloys. Alloying elements such as Mn and Cr play a dual role in mitigating the detrimental effects of Fe. First, they promote the early formation of Fe-rich intermetallic compounds (sludge) prior to the solidification of the primary Fcc phase. This enables sludge removal, effectively reducing the Fe content in the aluminum melt. Second, Mn and Cr additions suppress the formation of brittle and harmful β-AlFeSi phases, while stabilizing the more desirable α-Al15M3Si2 phase. This study presents a systematic computational analysis of how alloying element additions affect both the formation of intermetallic phases and the residual Fe content in the liquid phase. The results provide critical insights into designing more robust and recyclable aluminum alloys through CALPHAD-guided composition optimization. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Aluminum, Recycling and Secondary Recovery, Computational Materials Science & Engineering |