| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Composite Materials for Nuclear Applications III
|
| Presentation Title |
Developing Methods to Predict Failure and Crack Growth Using Small Angle Scattering Techniques |
| Author(s) |
Sean Fayfar, Boris Khaykovich, David Sprouster |
| On-Site Speaker (Planned) |
Sean Fayfar |
| Abstract Scope |
Nuclear graphite is an integral component in designs of new advanced nuclear reactors due to excellent thermal and mechanical properties. These reactors require materials with well characterized effects upon irradiation for use over long periods of time. Nuclear graphite, composed of a polygranular mixture, does have significant irradiation-induced changes in the thermophysical and mechanical properties that limit its service lifetime. The connection between the changes in the microstructure and the macroscopic changes needs to be better understood. Here, we present the results using X-ray diffraction techniques of neutron-irradiated G3470 graphite samples after exposure to a wide temperature-dose regime. We show evidence of radiation-induced structural degradation and significant changes in the atomic and microstructure that result in changes in thermophysical properties. By quantifying the changes in the microstructure, we aim to build statistical models that predict the probability of failure using Weibull distributions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nuclear Materials, Mechanical Properties, Composites |