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. 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 $\alpha +\delta$ phase. After being irradiated by 84 MeV Xe ions at 700 ^∘C up to 2.19 × 10¹⁷ ions/cm² fluence, the U-10Zr was speculated to evolve into micro-scale ${\gamma }_1+{\gamma }_2$ phases as predicted by the U-Zr phase diagram. During post-irradiation cooling, the U-rich γ₁ phase was mainly transformed to the α phase, while the Zr-rich γ₂ phase was partially retained along with formation of hexagonal structure phase (δ or ω). Xe bubbles formed in the γ₁ and γ₂ phases have salient different morphologies, implying faster Xe diffusion in the γ₁ phase than the γ₂ 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.

这是通过84兆根电子伏的Xe离子在700照射的U 10Zr二元金属燃料的辐照后检查（PIE）结果 ^∘报告℃。U-10Zr标本是通过电弧熔化将元素U和Zr粉末均质化而合成的。制成的U-10Zr以亚微米针状为主$\alpha +\delta$相。在700由84兆重电子伏的Xe离子照射后 ^∘ C至2.19×10 ¹⁷ 离子/ cm ²能量密度，在U-10Zr推测演变为微米级${\gamma }_{\mathrm{1个}}+{\gamma }_2$U-Zr相图预测的相位。在照射后的冷却中，富含U的γ ₁相主要转化为α相，同时增加富Zr的γ ₂相部分地形成六边形结构相（沿保持δ或ω）。氙形成在气泡γ ₁和γ _2个相具有显着不同的形态，在暗示更快的Xe扩散γ ₁相位比γ ₂相。这项研究中收集的定量气泡形态数据可以为开发和验证该燃料的燃料性能模型提供有价值的参考。