Microstructure investigations of temperature effect on Al-UMo diffusion couples irradiated by swift Xe ions

JOURNAL OF NUCLEAR MATERIALS

卷:547

Article

Miao, Yinbin¹  Ye, Bei¹  Shi, Jingyi²  Mo, Kun¹  Jamison, Laura¹  Bhattacharya, Sumit¹  Oaks, Aaron¹  Petry, Winfried²  Yacout, Abdellatif M.¹ 

[1] Argonne Natl Lab, Lemont, IL 60439 USA

[2] Tech Univ Munich, Forschungs Neutronenquelle Heinz Maier Leibnitz F, Lichtenbergstr 1, D-85747 Garching, Germany

关键词: Radiation damage;    Swift ion irradiation;    Metallic fuels;    Fission gas behavior;    Radiation-induced interaction;    Transmission electron microscopy;   

DOI  :  10.1016/j.jnucmat.2020.152757

来源: Elsevier

【 摘 要 】

Post-irradiation examination (PIE) results of microstructure in irradiated Al-UMo diffusion couples are reported. These diffusion couples were irradiated by 60 MeV Xe ions at four different temperatures up to approximately 5.5 x 10(17) ions/cm(2) peak ion fluence. An Al-UMo interaction layer (IL) was found to form at all four investigated temperatures. The IL is homogeneously amorphous when formed up to 150 degrees C. At 215 degrees C, the (U,Mo)Al-3 nanocrystalline precipitates form within the amorphous IL matrix. Kirkendall voids with prominent temperature dependence were observed in both the Al layer and its interface with the IL. On the other hand, Xe bubbles were found to form in UMo and Al-UMo IL with different morphology. These microstructure features were quantitatively measured and are reported to provide valuable references for understanding the irradiation behavior of UMo/Al dispersion fuel. (C) 2021 Elsevier B.V. All rights reserved.

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