About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Developments in Advanced Nuclear Structural Materials
|
| Presentation Title |
Variance Effects of Manufacturing on the Irradiation Induced Swelling Response of HT-9 |
| Author(s) |
Justin Hamil, Nathan Beets, Kevin G. Field |
| On-Site Speaker (Planned) |
Justin Hamil |
| Abstract Scope |
In this study, the swelling response of various heats of HT-9 under high dose defocused dual-ion irradiation was studied. Two HT-9 variants were irradiated, which included a forged plate of ACO3 and one drawn cladding tube geometry. Ion irradiations were conducted at doses of 80, 100, and 150 dpa at a temperature of 445°C with a helium concentration of 4.3 appm/dpa to evaluate swelling results based on material product form. For the purposes of rapid characterization, these images were analyzed with the object-wise detection YOLOv8 machine learning (ML) model. Radiation cavity densities at 150 dpa were measured to be 1.0x1022/m2 and 1.4x1022/m2, had an average size of 11.4 ± 0.4 nm and 5.7 ± 0.2 nm, and resulted in 16.8% and 2.6% void swelling for the forged ACO3 and drawn cladding variants, respectively. The effect of swelling due to material product form on pre-existing sink strength will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Characterization, Iron and Steel |