| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Thermodynamics and Phase Diagrams Applied to Materials Design and Processing: An FMD/SMD Symposium Honoring Rainer Schmid-Fetzer
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| Presentation Title |
Investigation Fe-Mg phase equilibria under High Temperature and High Pressure conditions |
| Author(s) |
Olivier Dezellus, Mathias Desseaux, Jerome Andrieux, Paraskevas Parisiadis, Guillaume Morard |
| On-Site Speaker (Planned) |
Olivier Dezellus |
| Abstract Scope |
Iron (Fe) and magnesium (Mg) are important metals for the metallurgical industries, and Rainer Schmid-Fetzer has made a significant contribution to the understanding of these elements and in particular to the thermodynamic description of iron- and Mg-based alloys. The Fe-Mg system is also of interest to geology, as Mg has recently been proposed as a potential candidate for alloying with Fe in the earth's liquid outer core to explain its low density compared with pure Fe or some classic Fe-based melts. However, at ambient pressure, the two elements are not miscible, even in the liquid state, which is characterized by a huge miscibility gap. Recently, we have been investigating phase equilibria in the Fe-Mg system at high temperature and under extreme conditions, both at high pressure and high temperature. Experimental results and the resulting Calphad model will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnesium, Iron and Steel, Modeling and Simulation |