| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
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| Symposium
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Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments V
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| Presentation Title |
Structural Characterization of Ultra-High Temperature Ceramics in Three Dimensions for Statistical and Physics-Based Modeling |
| Author(s) |
Randi Kay Swanson, Michael Chapman, Sara Akhavan, Ata Mesgarnejad, Hessam Babaee, Ashley Hilmas, Michael Uchic, William Fahrenholtz, Scott McCormack |
| On-Site Speaker (Planned) |
Randi Kay Swanson |
| Abstract Scope |
Ultra-high temperature ceramics (UHTCs) are a class of materials that are attractive candidates for extreme environments such as thermal protection systems for vehicles exceeding Mach 1, refractory lining materials, and structural materials for nuclear systems. Standard manufacturing of ZrB2 (a promising UHTC) results in components with large differences in properties due to critical flaws that form during processing. The goal of this project is to 1) understand how these critical flaws evolve during hot pressing, 2) understand the structure of ZrB2 in 3D, and 3) use this data to build a database to enable uncertainty quantification of processing effects on properties through Bayesian statistics. This study incorporates 3D imaging such as: (i) preliminary in-situ high temperature pressureless sintering µ-CT, (ii) ex-situ µ-CT and (iii) serial sectioning data. This 3D data will be incorporated into a database to develop a statistical model to reduce the uncertainty of processing variables on UHTCs. |