| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Magnetism and Magnetic Materials
|
| Presentation Title |
Effects of Interstitial Elements on the Ordered Structure of Fe-Ni Alloys |
| Author(s) |
Jeongsoo Han, Hyunseok Oh |
| On-Site Speaker (Planned) |
Jeongsoo Han |
| Abstract Scope |
The chemically ordered L10 phase of the Fe-Ni alloy is a promising candidate for use as a rare-earth-free permanent magnet. However, achieving the L10 structure is extremely challenging because of the slow kinetics of diffusion near the order-disorder temperature. Recently, it was proposed that doping with nitrogen can significantly enhance the transition kinetics by influencing the energy difference between the ordered and disordered phases. Here, we performed ab-initio calculations of (Fe)2(Ni)2(Interstitial)x and FeNi(Interstitial)x using density functional theory (DFT) to predict the potential effects of various interstitial elements—such as carbon, phosphorus, and hydrogen—on phase stability, interstitial sites, and tetragonal distortion in the FeNi system. This study will provide guidelines for choosing the appropriate type and assessing the impact of each interstitial element. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Magnetic Materials, Phase Transformations, Shaping and Forming |