About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Industry
|
| Presentation Title |
Dual Ion Irradiation Response of Wrought and Additively Manufactured Alloy 709 |
| Author(s) |
Katherine Baker, Steve J Zinkle, Caleb Massey, Stephen Taller |
| On-Site Speaker (Planned) |
Katherine Baker |
| Abstract Scope |
Alloy 709 (A709) is a high‑performance austenitic stainless steel currently under evaluation for high‑temperature nuclear reactor systems due to its exceptional creep strength and promising radiation tolerance. However, its irradiation behavior remains insufficiently characterized, particularly for components produced through additive manufacturing, where distinct microstructural features may influence radiation response. The irradiation response of both wrought and laser powder bed fusion (LPBF) A709 were investigated. Dual ion-irradiations were performed using 9 MeV Fe ions with simultaneous 3.42 MeV He implantation at two implantation rates, with irradiations conducted at 475°C and 600°C under two dose rate conditions, reaching a total damage level of 2 dpa. Post‑irradiation characterization including TEM, STEM‑EDS, and nanoindentation evaluated swelling, hardening, dislocation evolution, and radiation‑induced segregation. These results advance understanding of A709’s structure-property evolution under reactor‑relevant conditions and data towards qualification. In addition, this study provides insight into dose rate effects, enabling future evaluation of dose‑dependent radiation characteristics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Nuclear Materials, Characterization |