| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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| Presentation Title |
Microstructural impact on brittle fracture path investigated via high-energy synchrotron techniques |
| Author(s) |
Sara Gorske, Mythreyi Ramesh, Jun-Sang Park, Peter Kenesei, Hemant Sharma, Jonathan Almer, Peter Voorhees, Katherine Faber |
| On-Site Speaker (Planned) |
Sara Gorske |
| Abstract Scope |
Brittle fracture is a difficult failure mechanism to investigate in real-time, as the speed and catastrophic nature of a growing crack front hinder many in-situ techniques. However, the double-cleavage drilled compression sample geometry allows for controlled crack growth in a ceramic material. The high X-ray energy and 360-degree rotation capability of synchrotrons provide an ideal way to investigate how a growing crack interacts with the local microstructure at many different load steps. The techniques considered are micro-computed X-ray tomography to investigate the shape and extension of the crack front, and high-energy diffraction microscopy to track the location, orientation, and average strain field of nearby grains. We present results from performing this analysis on aluminum oxynitride samples, with insight into how the size, location, and orientation of grains affect the strain distribution and how the local stresses in turn impact or impede the direction and extension length of the crack. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Mechanical Properties, |