| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dilute Alloying and Impurity Effects on Phase Transformations
|
| Presentation Title |
Effects of Dilute Phosphorus Alloying on Phase Transformations in the Fe-Ni System |
| Author(s) |
Ugochukwu Ochieze, Matthew A. Steiner |
| On-Site Speaker (Planned) |
Matthew A. Steiner |
| Abstract Scope |
While the equilibrium phase diagram of Fe-Ni is well established due to unique behavior around the 36% Ni “Invar” composition, the effects of non-metal impurities have received less attention due to their typically deleterious impact on the stability of Invar-type alloys. As part of an effort to develop processing routes for Fe-Ni-P magnetic materials, a potential replacement for rare-earth permanent magnets, it is important to understand the impact of dilute (< 1 at%) P additions on the equilibrium low-temperature phase fields of the Fe-Ni system. The limited experimental data currently available for Fe-Ni-P alloys is largely from over half a century ago and focuses on the larger P additions and Ni-lean compositions relevant to astrogeology. Characterization of a matrix of Fe-Ni-P alloy compositions as a function of temperature will be presented alongside CALPHAD thermodynamic modeling to better establish the ternary diagram phase behavior in the dilute P regime. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Phase Transformations, |