| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
|
| Symposium
|
Grain Boundaries, Interfaces, and Surfaces in Ceramics: Fundamental Structure—Property—Performance Relationships
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| Presentation Title |
Elucidating Grain Boundary Motion with 4D Grain Growth Measurements Using Non-destructive X-ray Diffraction Grain Mapping |
| Author(s) |
Amanda Krause |
| On-Site Speaker (Planned) |
Amanda Krause |
| Abstract Scope |
Several similar x-ray diffraction-based techniques that non-destructively characterize the 3D microstructure, including grain orientation and grain boundary location, have been developed and made more accessible over the past decade. These non-destructive grain mapping techniques provide a unique perspective of grain boundary motion in 3D microstructures because the same boundaries can be tracked before and after a heat treatment. Such 4D studies allow us to test accepted grain growth theories, e.g. influence of local curvature on grain boundary motion, and probe previously unexplained phenomenon like anti-thermal grain growth in SrTiO<sub>3</sub>. The method has a particular advantage of exploring anisotropic grain boundary behavior in 3D microstructures. Here, relationships between grain boundary velocity, character and energy are explored with high energy x-ray diffraction microscopy and laboratory-based diffraction contrast tomography measurements of ceramic materials. The challenges associated with these technique will also be discussed. |