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 |
Quantifying and Reducing the Errors in Void Swelling Calculations of Irradiated Materials With Transmission Electron Microscopy |
| Author(s) |
James V. Haag, Kevin Fiedler, Matthew Olszta, Dan Edwards, Wahyu Setyawan |
| On-Site Speaker (Planned) |
James V. Haag |
| Abstract Scope |
Transmission electron microscopy (TEM) is commonly applied in the quantification of void swelling in irradiated materials. The extreme sensitivity of TEM allows the microscopist to visualize the projection of individual voids within the specimen which contribute to the overall material swelling. Conventionally, grains of interest are oriented to a kinematical condition and approximated as a perfect sphere for the purposes of volume determination. While this method is expedient, materials possess an abundance of different equilibrium void shapes, for which the spherical assumption will lead to significant over/under estimation of true void volume. This work numerically defines the errors in using the spherical assumption to determine the volume of several common polyhedral void shapes noted in literature, and does so as a function of crystallographic orientation. We then suggest a methodology to reduce this experimental error by incorporating orientation information for a more robust assessment of void swelling in irradiated materials. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Environmental Effects |