高He通量注入条件下F/M和ODS钢中纳米微结构对He泡形核和长大的影响  

Effect of Nanostructures on Bubbles Nucleation and Growth in F/M and ODS Steels Exposed with High Helium Fluence

作　　者：李靖 金鹏[1,2] 崔明焕 朱亚滨[1,2] 刘超 Vladimir Krsjak[3] 魏孔芳 庞立龙 盛彦斌 申铁龙[1,2] 王志光 LI Jing;JIN Peng;CUI Minghuan;ZHU Yabin;LIU Chao;Vladimir Krsjak;WEI Kongfang;PANG Lilong;SHENG Yanbin;SHEN Tielong;WANG Zhiguang(Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000,China;University of Chinese Academy of Sciences,Beijing 100049,China;Slovak University of Technology,Ilkovicova 3,81219 Bratislava,Slovakia)

机构地区：[1]中国科学院近代物理研究所,兰州730000 [2]中国科学院大学,北京100049 [3]斯洛伐克科技大学,布拉迪斯拉发81219,斯洛伐克

出　　处：《原子核物理评论》2022年第1期101-107,共7页Nuclear Physics Review

基　　金：National Natural Science Foundation of China(12005269,U1832206);Key Program of the Chinese Academy of Sciences(Research on the Development of Nuclear Power Materials and Service Security Technology,ZDRW-CN-2017-1)。

摘　　要：利用LEAF装置提供的2 MeV的He离子,在500和600°C分别对新型F/M钢-SIMP钢和ODS钢(MA956和Eurofer-ODS钢)注入1×10^(17) ions/cm^(2)的高通量He离子,借助透射电子显微镜,表征了辐照后三种材料的肿胀行为,验证了各材料中纳米微结构(晶界,析出相和纳米氧化物)对辐照后He泡成核和长大的影响。结果表明,基于材料中晶界和析出相对He泡生长的抑制作用,温度为500°C时,SIMP和Eurofer-ODS钢表现出较高的抗辐照肿胀性能,而MA956中纳米界面He泡成核和长大作用不明显,表现出较差的抗辐照肿胀性能;此外,温度为600°C时,Eurofer-ODS钢由于其晶界和氧化物界面的较强作用,表现出较好的抗辐照肿胀性能。总体来说,在高He通量注入条件下,材料中纳米结构的存在会抑制He泡长大的过程,但不同材料中纳米结构对He影响作用不同。A new type of F/M steel(SIMP steel)and two kinds of ODS steels(MA956 and Eurofer-ODS steels)were irradiated by 2 MeV He ions to fluence of 1×10^(17)ions/cm^(2) at 500 and 600°C.After irradiation,swelling behaviors and effect of nanostructures(such as grain boundaries,precipitates and nano-oxide particles)on the nucleation and growth of He bubbles were studied by transmission electron microscope.The results show that both SIMP and Eurofer-ODS steels exhibit better swelling resistance than MA956 ODS steel at 500°C,because the grain boundaries or precipitates pronouncedly inhibit the growth of He bubbles.The Eurofer-ODS steel shows best swelling resistance due to the inhibition of He bubbles growth by the grain boundary and oxide interface at 600°C.The present work shows that nanostructures in materials inhibit the process of He bubble growth under high He fluence conditions,but the degree of inhibition varies with different materials.

关 键 词：纳米微结构 钢 He泡 形核和长大 TEM 

分 类 号：TL341[核科学技术—核技术及应用]