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Miao, Yinbin
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Publications (4/4 displayed)
- 2023Enhance BISON Metal Fuel Transient Models and Enable Assessment Based on Out-of-Pile Transient Experiments
- 2021Metallic fuel cladding degradation model development and evaluation for BISONcitations
- 2020Microstructure evolution in U-10Zr alloy irradiated by swift Xe ions at 700 °Ccitations
- 2015Defect structures induced by high-energy displacement cascades in γ uraniumcitations
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article
Microstructure evolution in U-10Zr alloy irradiated by swift Xe ions at 700 °C
Abstract
The post-irradiation examination (PIE) results of U-10Zr binary metallic fuel that was irradiated by 84 MeV Xe ions at 700 °C are reported here. The U-10Zr specimen was synthesized by homogenizing elemental U and Zr powders through arc-melting. The as-fabricated U-10Zr was dominated by the sub-micron acicular α+ δ phase. After being irradiated by 84 MeV Xe ions at 700 °C up to 2.19 ×10<sup>17</sup> ions/cm<sup>2</sup> fluence, the U-10Zr was speculated to evolve into micro-scale γ<sub>1</sub> + γ<sub>2</sub> phases as predicted by the U-Zr phase diagram. During post-irradiation cooling, the U-rich γ<sub>1</sub> phase was mainly transformed to the αphase, while the Zr-rich γ<sub>2</sub> phase was partially retained along with formation of hexagonal structure phase (δ or ω). Xe bubbles formed in the γ<sub>1</sub> and γ<sub>2</sub> phases have salient different morphologies, implying faster Xe diffusion in the γ<sub>1</sub> phase than the γ<sub>2</sub> phase. The quantitative bubble morphology data collected in this study can provide valuable references for the development and validation of fuel performance models for this fuel.