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 |
In-Situ XRD Study of Alloy 709's Mechanical Behavior for Advanced Fast Reactor Applications |
Author(s) |
Dominic Piedmont, Donghee Park, Victoria Riso, Xiang Liu, James Stubbins |
On-Site Speaker (Planned) |
Dominic Piedmont |
Abstract Scope |
In-situ XRD information on Alloy 709’s mechanical response at various temperature and strain rate regimes was collected. From the resulting tensile tests, an optimized constitutive equation was developed. The simultaneously collected Wide and Small Angle X-ray Scattering (WAXS/SAXS) data was used to support the material representation given in the models. WAXS data revealed dislocation behavior and the presence of a secondary phase which resulted in load partitioning. Whereas, SAXS data was used to observe the volume fraction of phases as well as voids and their associated evolution and growth. With support from XRD analysis, an understanding and justifications for the resulting deformation constants within constitutive equations can be established. A complete picture of Alloy 709’s microstructural response to various temperature and strain rate deformation regimes is constructed from three observables: phase-based peak broadening, phase-based lattice strain, and void volume evolution, which are captured in an optimized set of constitutive equations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Nuclear Materials, Iron and Steel |