| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
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| Symposium
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Methods, Techniques, and Materials Discovery of Irradiation Effect Using In-situ Microscopy
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| Presentation Title |
In-situ 3D High-energy X-ray Diffraction Study on Deformation Behavior of Neutron-irradiated Fe-9%Cr |
| Author(s) |
Dominic Piedmont, Jun-Sang Park, Peter Kenesei, Jonathon Almer, Matthew Kasemer, Ezra Mengiste, James Stubbins, Meimei Li, Xuan Zhang |
| On-Site Speaker (Planned) |
Dominic Piedmont |
| Abstract Scope |
Given the extreme environments nuclear reactor core structural materials are exposed to, significant effort must be made to understand the microstructure-property correlation. However, there is a discontinuity of length scales under common investigation of materials. Mechanical testing provides insight to bulk behavior while electron microscopy gives nano- to micro-meter scale information. Presented is a direct link between the discontinuous length scales previously observed, via grain scale (meso-scale) characterization of deformation responses in irradiated materials. Using synchrotron x-rays, high energy x-ray diffraction microscopy (HEDM) nondestructively probes mm-size samples to obtain grain-resolved information in-situ and ex-situ. The resulting data allows for observations of grain rotation and residual strain evolutions as a function of deformation. Results were obtained for Fe-9%Cr samples: two irradiated to 0.1 dpa at temperatures of 300°C and 450°C, and one unirradiated sample for comparison. Experimental results are compared to computational results from Crystal Plasticity Finite Element Modeling (CPFEM) simulations. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Modeling and Simulation |