Effect of helium concentration on irradiation damage of Fe-ion irradiated SIMP steel at 300℃and 450℃

作     者：Zhen Yang Junyuan Yang Qing Liao Shuai Xu Bingsheng Li 杨振;杨浚源;廖庆;徐帅;李炳生

作者机构：Sino-French Institute of Nuclear Engineering and TechnologySun Yat-sen UniversityZhuhai 519082China State Key Laboratory for Environment-Friendly Energy MaterialsSouthwest University of Science and TechnologyMianyang 621010China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2021年第30卷第5期

页      面：81-86页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 0704[理学-天文学] 

基　　金：the National Natural Science Foundation of China(Grant Nos.U1832133 and 12075194) Sichuan Provial Science and Technology Program,China(Grant No.2020ZYD055) the Doctor Research Foundation of Southwest University of Science and Technology(Grant No.18zx714101) 

主　　题：martensitic steels Fe and He co-irradiation microstructure transmission electron microscopy 

摘      要：SIMP steel is newly developed fully martensitic steel for lead-cooled fast reactors and accelerator-driven *** is important to evaluate its radiation resistance via high flux neutron irradiation,where dense He atoms can be formed via(n,α)transmutation ***-irradiation with Fe and He ions,instead of neutron,was *** were irradiated with 6.4-MeV Fe ions to the damage dose of 5 dpa at a depth of 600 *** different helium injection ratios of 60-appm He/dpa(dpa:displacements per atom),200-appm He/dpa and 600-appm He/dpa at a depth of 600 nm,were *** different irradiation temperatures of 300℃and 450℃were carried *** effect of helium concentration on the microstructure of Fe-irradiated SIMP steel was *** damage was observed using transmission electron *** formed dislocation loops and bubbles depended on the helium injection ratio and irradiation *** of dislocation loops and helium bubbles were homogeneously distributed at 300℃,but not at 450℃.The causes of observed effects are discussed.