| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Effect of Mn on Eutectic Phase Equilibria in Al-rich Al-Ce-Ni alloys |
| Author(s) |
Alice E. Perrin, Ying Yang, Richard Michi, Kevin Sisco, Alex Plotkowski, Amit Shyam |
| On-Site Speaker (Planned) |
Alice E. Perrin |
| Abstract Scope |
The phases and microstructure of cast samples of Al-Ce-Ni and Al-Ce-Ni-Mn alloys were characterized for several annealing conditions which revealed the equilibrium phases at different temperatures. Phase analysis confirmed that minute levels of Mn substituted for Ni in the system drastically shifts the liquidus projection in the Al-rich corner of the ternary phase diagram such that the eutectic Al3Ni phase is suppressed entirely in favor of the Al23Ni6(Ce,Mn)4 phase. This data was combined with CALPHAD modelling of the liquidus projection for the quaternary system Al-Ce-Ni-Mn. Phase analysis of a heat treated AM sample of Al-Ce-Ni containing small amounts of Mn confirmed that the equilibrium phases present are consistent with cast samples. This result demonstrates the vast potential for using minute levels of alloying element Mn to drastically alter phase stability and microstructure in Al-Ce-Ni systems. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Aluminum, Characterization |