| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
Microstructural Evolution of Additively-Manufactured 316H Stainless Steel During High-Temperature Creep and Its Effects on Irradiation Resistance |
| Author(s) |
John Snitzer, Wei-Ying Chen, Xiaoyuan Lou |
| On-Site Speaker (Planned) |
John Snitzer |
| Abstract Scope |
This work focuses on 316H stainless steel produced by laser powder bed fusion (LPBF) and laser directed energy deposition (LDED). Creep tests were conducted at 650°C and 180 MPa. The testing conditions are selected under the dislocation creep regime. Specimens were stopped in the middle of the creep test within the steady state creep regime and at the onset of tertiary creep. Characterization was conducted to understand AM microstructural evolution and cavitation at different stages of creep. Samples were prepared and subjected to 1 MeV Kr ion irradiation up to a peak dose level of 5 dpa at 650°C at the IVEM facility to study the effects of creeped microstructure on radiation defect nucleation. Post-irradiation TEM work will quantify structural and chemical changes of dislocation cells at different radiation levels and the size, density, and distribution of voids and dislocation loops near cell boundaries and inside cells. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Environmental Effects, Nuclear Materials |