About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Characterization of Nuclear Materials and Fuels with Advanced X-ray and Neutron Techniques
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Presentation Title |
4D X-ray Diffraction Microscopy Study of Tensile Deformation of Neutron-irradiated Fe-9Cr Alloy |
Author(s) |
Xuan Zhang, Dominic Piedmont, Jun-Sang Park, Peter Kenesei, Jonathan Almer, Meimei Li |
On-Site Speaker (Planned) |
Xuan Zhang |
Abstract Scope |
The tensile deformation of two neutron-irradiated (450C/0.1dpa and 300C/0.1dpa) Fe-9Cr samples were studied at the Advanced Photon Source by far-field high-energy x-ray diffraction microscopy (ff-HEDM) at intermittent loading steps to 4.5% strain, along with in-situ wide-angle x-ray scattering (WAXS) during loading. Their unirradiated counterpart was also studied in the same way. In addition, for all three samples, the undeformed and the deformed grains within the same volume were characterized by near-field HEDM (nf-HEDM). In this talk, I will provide some key results from this comprehensive 4D (3D + deformation state) dataset, focusing on the microstructural evolution at the meso scale (grain/sub-grain scale), including the grain morphology and orientation change, and the residual strain buildup. This comprehensive dataset provides unpreceded information regarding the effect of neutron irradiation to the deformation mode of the Fe-9Cr ferritic alloy, across multiple length scales from macro to meso to micro. |
Proceedings Inclusion? |
Planned: |