| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Elucidating Microstructural Evolution Under Extreme Environments
|
| Presentation Title |
X-Ray Evaluation of Ion Irradiation-Induced Defects in Austenitic Steels: Comparison With an Analytical Model Based on TEM Observations |
| Author(s) |
Raphaëlle Guillou, Thomas Jourdan, Marie Loyer Prost, Dominique Thiaudière, Joël Malaplate |
| On-Site Speaker (Planned) |
Raphaëlle Guillou |
| Abstract Scope |
Understanding the relation between microstructural defects and macroscopic properties, such as mechanical properties and dimensional changes, is a key problem for materials in extreme environments. Ion irradiations often induce, at a shallow depth (a few microns), strongly heterogeneously distributed microstructural defects, in particular prismatic dislocation loops which are generally characterized by transmission electron microscopy (TEM).
To complement TEM measurements, it is necessary to develop techniques to quantify and relate the impact of defects with macroscopic changes.
Depth-resolved measurements of lattice parameter change have been performed on an ion-irradiated 304-L austenitic steel, using X-ray diffraction (XRD) with different incident angles on the DIFFABS beamline from SOLEIL synchrotron. Results are compared to cross-sectional TEM observations obtained on the same sample, from which spatially-varying lattice parameter change, as measured by XRD, is evaluated with an analytical model. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Iron and Steel, Other |