About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
| Presentation Title |
G-5: On the Role of Slip and Interfaces on Plastic Localization Behavior in Ferritic-Martensitic Steels for Next-Generation Nuclear Reactors |
| Author(s) |
Rephayah L. Black, Dhruv Anjaria, Vignesh Vivekanandan, Benjamin Eftink, Laurent Capolungo, Jean-Charles Stinville, Hi Vo |
| On-Site Speaker (Planned) |
Rephayah L. Black |
| Abstract Scope |
Ferritic-martensitic steels, such as HT-9, are important structural materials under consideration for next-generation nuclear reactors; however, the understanding of how plastic deformation localizes and accumulates as a function of microstructure is an area where our understanding has been limited due to the complexity of the high interface density microstructure of martensite. Using advanced tools, such as high resolution digital image correlation (HRDIC), plasticity is able to be observed and measured on the nanometer-scale in a statistical manner. Of particular interest in this study is the interplay between plastic deformation at interfaces and crystallographic slip within the laths of the martensitic microstructure. By comparing low-N FeCrC and low-N HT-9 ferritic-martensitic alloys, we revealed that the formation of intra-lath precipitates has a strong influence on the slip localization direction. Additionally, the absence of prior austenite grain boundary events in HT-9 suggests a potential interfacial strengthening role of intragranular carbides in ferritic-martensitic steels. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Other |