About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Special Topics in Nuclear Materials: Reproducibility and Uncertainty; Hydrogen Effects; Space and Microreactor Systems
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| Presentation Title |
Evaluating Measurement Consistency in Irradiated Stainless Steel Using Complementary Microscopy and Spectroscopy Techniques |
| Author(s) |
Chris Mcrobie, Syed Rizvi, Fu-Yun Tsai, Caleb Schenck, Ming Liu, Lin Shao, Charles Perkins, Elizabeth Kautz, Bharat Gwalani |
| On-Site Speaker (Planned) |
Chris Mcrobie |
| Abstract Scope |
Austenitic stainless steels are widely used as structural materials in nuclear reactors where they accumulate significant irradiation damage over time. A critical challenge in characterizing this damage is understanding how defect populations compare across spatial scales. Bulk techniques like positron annihilation lifetime spectroscopy (PALS) are sensitive to vacancy-type defects and small clusters, while scanning and transmission electron microscopy (SEM/TEM) offer visualization of microstructural features at the micron and nanometer scales. However, correlations between these methods remain insufficiently explored. In this study, 304 SS specimens subjected to ion irradiation were analyzed using PALS, SEM, and TEM to investigate defect structures from atomic to microstructural dimensions. This multiscale approach enables assessment of defect consistency and evolution across techniques, providing insights into how irradiation-induced damage manifests at different observation scales. Results support a more integrated understanding of radiation damage and contribute to broader efforts in nuclear materials characterization under extreme conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Environmental Effects, Iron and Steel |