| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
Combination of Homogeneous Void Nucleation Theory and Defect Reaction Rate Theory Calculation for Understanding the Safe Analysis Zone Boundary in Self-Ion Irradiated Fe |
| Author(s) |
Zhihan Hu, Yongchang Li, Aaron French, Frank Garner, Lin Shao |
| On-Site Speaker (Planned) |
Zhihan Hu |
| Abstract Scope |
The safe analysis zone in ion irradiation refers to the region not affected by either the surface or the injected interstitial effect. Determining this zone is important to study void swelling resistance of metals in reactor-like environments. Previously, a method based on the self-consistency of swelling-dpa dependence has been developed. For Fe self-ion irradiated Fe, the injected interstitial effect starts at roughly half of the projected range. In this talk, we report on multiscale modeling and shed light on the fundamentals of boundary formation. Rate theory calculations are used to obtain defect concentration and defect clusters under specific irradiation conditions and starting dislocation densities. These findings are then used to calculate void nucleation rates, which are used to quantitatively determine swelling susceptibility. The study also provides an understanding of the effect of the free surface on void nucleation, which determines the shallow boundary of the safe analysis zone. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Nuclear Materials, Other |