The irradiation resistance of CLF-1 steel was investigated by using He ion irradiation with an energy of 300 keV. After the irradiation, the structure of CLF-1 steel mainly remained martensitic structure, while the lattice distortion and grain refinement occurred in the irradiation damaged layer. As irradiation fluence increased, the number of vacancies in CLF-1 steel increased, and the vacancies combined with the He atoms to form a bubble layer with the thickness of about 300 nm which located at the end of the He ions range. In the bubble layer, local amorphous region formed and the carbide particles showed a tendency to decompose. When the irradiation fluence was up to 1 × 10¹⁸ions/cm², extensive blisters and a small amount of peelings appeared on the surface of CLF-1 steel. Due to grain refinement and dispersion of small carbide particles, the hardness of CLF-1 steel increased after the irradiation.

通过使用300keV能量的He离子辐照研究CLF-1钢的辐照抗性。照射后，CLF-1钢的组织主要为马氏体组织，而照射损伤层发生晶格畸变和晶粒细化。随着辐照通量的增加，CLF-1钢中的空位数量增加，并且该空位与He原子结合形成气泡层，该气泡层位于He离子范围的末端，厚度约为300 nm。在气泡层中，形成局部非晶区域，并且碳化物颗粒显示出分解的趋势。当辐照通量达到1×10 ¹⁸ ions / cm ^2时，CLF-1钢的表面出现大量水泡和少量剥离。由于晶粒细化和碳化物小颗粒的分散，辐照后CLF-1钢的硬度提高了。