| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Phase-field Modeling of Laves Phase Precipitate in Accident Tolerant Cladding |
| Author(s) |
Jeonghwan Lee, Kunok Chang |
| On-Site Speaker (Planned) |
Kunok Chang |
| Abstract Scope |
Fe-Cr-Al alloy has been studied as a candidate material for accident-resistant cladding because of its superior high-temperature oxidation resistance. Recently, it has been experimentally reported that the Laves phase is precipitated when the Fe-13.5Cr-4.7Al alloy is irradiated with Fe+ ions, which governs irradiation embrittlement. Phase-field modeling has been widely used to simulate stable phase precipitation, but recently, it is also possible to simulate precipitation behavior that occurs in situations quite far from equilibrium, such as ion irradiation. The phase-field modeling is being improved to simulate the precipitate process even if the thermodynamic stable phase is not confirmed. In this study, the precipitation behavior was simulated in the Fe+ ion irradiation environment for the Laves phase, which is not confirmed as a thermodynamically stable phase, and the effects of the material damage expressed and temperature on precipitate behavior were evaluated. The simulation results were validated through the experimental results. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, Nuclear Materials, Phase Transformations |