| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Recycling of Secondary, Byproduct Materials and Energy
|
| Presentation Title |
Thermodynamic Modeling and Experimental Validation of Iron-Containing Intermetallic Phase Formation in Recycled Cast Aluminum Alloys |
| Author(s) |
Emre Cinkilic, Colin Ridgeway, Xinyan Yan, Alan A. Luo |
| On-Site Speaker (Planned) |
Alan A. Luo |
| Abstract Scope |
The formation of Fe-containing intermetallic phases during solidification of secondary cast aluminum alloys (e.g., Al-Si-Mg alloys containing 0.5 to 1%Fe) is critical to their mechanical properties. In this talk, the cooling rate dependent modification effect of Mn on the formation of intermetallic phases was investigated using CALculation of PHAse Diagrams (CALPHAD) modeling and solidification experiments. The critical Mn concentration required to prevent the formation of detrimental β-Al5FeSi depends on both the alloy composition (particularly the Fe/Mn ratio) and the cooling rate. A map of Fe/Mn ratio vs. cooling rate was created to summarize the metallurgical conditions of Fe-rich intermetallic phase formation, which can be used to control the microstructure of aluminum castings made of low-cost secondary alloys with high Fe contents. |
| Proceedings Inclusion? |
Planned: |