The effect of neutron irradiation on the microstructure of EUROFER-ODS alloy reinforced with an addition of 0.5% Y₂O₃ was analyzed by transmission electron microscopy. The irradiation of up to 16.2 dpa damage dose at 300°C and 400°C was performed in Petten High Flux Reactor. This study focuses on the imaging, identification, and quantitative analysis of interstitial loops and voids located on ODS particles. The nano-sized loops and point defects with b½〈111〉 Burgers vectors are preferentially located near structural defects such as the line dislocations or impurities in the material irradiated at 300°C. Homogeneously distributed loops having Burgers vectors of b½〈111〉 and b〈100〉 types were found in the material irradiated at 400°C. The obtained quantitative data on radiation-induced defects such as size, number density and relaxation volume were compared with EUROFER97 irradiated at the same conditions. It was found that the occurrence of radiation induced defects depends on the local number density and the size distribution of the ODS particles and not only on the irradiation damage and temperature.

中子辐照对添加0.5% Y ₂ O ₃增强的EUROFER-ODS合金微观结构的影响用透射电子显微镜分析。在 Petten 高通量反应器中在 300°C 和 400°C 下进行了高达 16.2 dpa 损伤剂量的辐照。这项研究的重点是位于 ODS 颗粒上的间隙环和空隙的成像、识别和定量分析。具有 b1/2<111> Burgers 矢量的纳米级环和点缺陷优先位于结构缺陷附近，例如 300°C 辐照材料中的线位错或杂质。在 400°C 辐照的材料中发现了具有 b1/2<111> 和 b<100> 类型的 Burgers 向量的均匀分布环。将获得的关于辐射诱导缺陷的定量数据，如尺寸、数密度和弛豫体积，与相同条件下辐照的 EUROFER97 进行比较。