| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments
|
| Presentation Title |
Modified stereo TEM for 3D analysis of defects |
| Author(s) |
Benjamin P. Eftink, Stuart Andrew Maloy |
| On-Site Speaker (Planned) |
Benjamin P. Eftink |
| Abstract Scope |
Characterization of irradiation induced microstructural changes using TEM typically has the issue of analyzing 3D distributions of features in 2D. This is not effective, for example, when analyzing the correlation between precipitates and cavities or the character of dislocations. While there are traditional tomographic methods to extract the third spatial dimension of information, these require extensive data collection and reconstruction. A modified version of stereo-microscopy, developed at LANL, removes the traditional 3D tomography barriers by using a discrete-geometric approach using only two images to model microstructural features including precipitates, cavities, dislocations, and grain boundaries. This talk will present methodology and recently published applications of a modified stereo-TEM method to neutron irradiated HT-9 and tungsten alloys for nuclear environments. |