| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Stability in Extreme Environments
|
| Presentation Title |
Damage Dependence of Radiation Induced Segregation at Fully Characterized Grain Boundaries in Proton Irradiated 316L Stainless Steel |
| Author(s) |
Sara Wonner, Pascal Bellon |
| On-Site Speaker (Planned) |
Sara Wonner |
| Abstract Scope |
It has been reported that distinct grain boundaries can exhibit different levels of radiation induced segregation (RIS). RIS studies, however, most often utilized different samples to investigate the evolution of RIS with increasing radiation damage levels, without full determination of the character of the investigated grain boundaries (GBs), thus potentially resulting in uncontrolled RIS variations. In this study, we take advantage of advances in sample preparation and characterization to overcome these limitations. EBSD mapping is combined with focused ion beam for preparing cross-sectional TEM samples across selected GBs, with thin areas extending over ≈ 10 µm in depth, allowing for the determination of the 5 degrees of freedom of each grain boundary. We illustrate the benefits of this approach by quantifying Ni and Si RIS in 2 MeV proton irradiated 316L samples by STEM-EDS, for GBs ranging from large angle ones to special GBs such as twin boundaries. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Iron and Steel |