| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments
|
| Presentation Title |
Swelling of Nuclear Reactor Steels: Modeling, Theory, and Accelerated Testing
|
| Author(s) |
Michael J. Fluss, Edward I. Moses |
| On-Site Speaker (Planned) |
Michael J. Fluss |
| Abstract Scope |
Understanding and predicting in-service changes and degradation of the internal materials in commercial nuclear energy facilities is important with respect to safety, licensing, operations, sustainability, and economics. Swelling is of particular importance with regards to predicting in core material service lifetimes. It is well known that heavy ions produce atomic displacement damage at rates five to six orders of magnitude greater than reactor neutrons. Although neutron induced swelling for nuclear reactor steels was discovered over 50 years ago there is still no accepted engineering methodology for accelerated studies using heavy ion beams. To fully take advantage of this highly accelerated testing for swelling requires an analytical methodology that accurately predicts swelling over a range of displacement rates from 10exp-2 to 10exp-9 displacements per atom per second. Here we will outline such a parametric methodology and its rate theory underpinnings. |