The results of research on the influence of the chemical composition, cold-deformation, and irradiation temperature on the short-time mechanical properties of the austenitic stainless steels 08Kh18N10T, EI-847, EP-172, and ChS-68 after neutron irradiation in the BN-350 fast reactor to damaging dose 57–59 dpa in the range 400–490°C are reported. The investigation showed that high-temperature radiation embrittlement is most pronounced in 08Kh18N10T followed by EI-847 steel. The steels EP-172 and ChS-68 are less susceptible to high-temperature radiation embrittlement. After irradiation, the ultimate strength of the studied steels in the austenitized and cold-deformed state is almost identical. A difference of the plasticity of irradiated samples is observed only for ChS-68, when in the cold-deformed state the plasticity after testing at temperature above 600°C is higher than in the austenitized state. An increase of the irradiation temperature noticeably impacted only the high-temperature mechanical properties of the steels 08Kh18N10T and EI-847. The result of raising the irradiation temperature was that the onset of high-temperature radiation embrittlement shifted toward lower temperatures.

中文翻译：

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中子辐照奥氏体不锈钢 08Kh18N10T、Ei-847、EP-172 和 ChS-68 的高温辐射脆化

化学成分、冷变形和辐照温度对奥氏体不锈钢 08Kh18N10T、EI-847、EP-172 和 ChS-68 中子辐照后短时力学性能影响的研究结果据报道，BN-350 快堆在 400-490°C 范围内的破坏剂量为 57-59 dpa。调查表明，高温辐射脆化在 08Kh18N10T 钢中最为明显，其次是 EI-847 钢。钢 EP-172 和 ChS-68 不易发生高温辐射脆化。辐照后，所研究的钢在奥氏体化和冷变形状态下的极限强度几乎相同。仅对 ChS-68 观察到辐照样品的可塑性差异，冷变形状态600℃以上试验后的塑性高于奥氏体化状态。辐照温度的增加仅显着影响钢 08Kh18N10T 和 EI-847 的高温机械性能。提高辐照温度的结果是高温辐射脆化的开始向较低温度转移。