| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Methods, Techniques, and Materials Discovery of Irradiation Effect Using In-situ Microscopy
|
| Presentation Title |
Utilizing High-energy X-rays for Microstructural Characterization of Metallic Hydrides |
| Author(s) |
Reeju Pokharel, Samantha Lawrence, Travis Carver, Sangwon Lee, Donald W. Brown |
| On-Site Speaker (Planned) |
Reeju Pokharel |
| Abstract Scope |
The crystallographic location of hydride formation and its effects on structure property changes in metallic materials is poorly understood. Here, we have utilized high-energy synchrotron X-rays to non-destructively probe bulk metallic samples to characterize metallic hydrides formation with respect to crystallographic grains and studied how the presence of hydrides give rise to micro-mechanical stress fields development. High-energy X-ray diffraction microscopy (HEDM) in conjunction with micro-tomography provided a unique way for bulk microstructural characterization, affording spatially resolved crystallographic orientation, volumetric density maps, and grain resolved micromechanical fields measurements in three-dimension. We have demonstrated their capability to high-Z materials to understand the effect of hydrogen exposure in microstructure development. Specimens are prepared under various conditions, to observe early-stage nucleation and growth process of metallic hydrides. The non-destructive nature of these characterization techniques provides unprecedented experimental data for development and validation of theoretical codes for material performance prediction under extreme operating conditions. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Nuclear Materials, Mechanical Properties |