| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
2024 Graduate Student Poster Contest
|
| Presentation Title |
SPG-31: Dilatometric Studies of Fe-Ni-P Ternary Alloys |
| Author(s) |
Ugochukwu Philip Ochieze, Ayobami Oladipo, Matthew A. Steiner |
| On-Site Speaker (Planned) |
Ugochukwu Philip Ochieze |
| Abstract Scope |
The coefficients of thermal expansion (CTE) of Fe-Ni alloys have been studied extensively due to unique behavior around the 36% Ni “Invar” composition, where magnetic effects nearly negate thermal expansion over a range of temperatures. Non-metal impurities generally have a deleterious impact on the stability of Invar-type alloys, so the dilatometric behavior of Fe-Ni-P has received little attention. While not possessing desirable properties for structural and instrumental purposes, recent studies suggest Fe-Ni-P ternary alloys may provide viable non-equilibrium processing routes for promoting the chemically ordered L10 Fe-Ni tetrataenite phase, a potential replacement for rare-earth permanent magnets. Dilatometric results of arc-melted Fe-Ni alloy compositions with quenched in concentrations of P will be presented, with heating and cooling curves acquired at different rates between room temperature and melting (~1400°C), focusing both on the impact of P on the lattice expansion and phase diagram transitions compared to binary Fe-Ni alloys. |