Cavity swelling of RAFM steel under 792 MeV Ar-ions irradiation at 773 K  

作　　者：申铁龙 王志光 姚存峰 孙建荣 魏孔芳 朱亚滨 庞立龙 崔明焕 李远飞 马艺准 盛彦斌 缑洁 

机构地区：[1]Institute of Modern Physics, Chinese Academy of Sciences [2]University of Chinese Academy of Sciences

出　　处：《Chinese Physics C》2013年第8期88-92,共5页中国物理C（英文版）

基　　金：Supported by National Basic Research Program of China (973 Program, 2010CB832902);National Natural Science Foundation of China (10835010, 91026002)

摘　　要：China reduced-activation ferritic/martensitic steel is irradiated at 773 K with 792 MeV Ar-ions to fluences of 2.3×10^20 and 4.6×10^20 ions/m2, respectively. The variation of the microstructures of the Reduced-activation ferritic/martensitic （RAFM） steel samples with the Ar-ion penetration depth is investigated using a transmission electron microscope （TEM）. Prom analyses of the microstrueture changes along with the Ar-ions penetrating depth, it is found that high-density cavities form in the peak damage region. The average size and the number density of the cavities depend strongly on the damage level and Ar-atom concentration. Swelling due to the formation of cavities increases significantly with an increased damage level, and the existence of deposited Ar-atoms also enhances the growth of the average size of the cavities. The effect of atom displacements and Ar-atoms on the swelling of the RAFM steel under high energy Ar-ion irradiation is discussed briefly.China reduced-activation ferritic/martensitic steel is irradiated at 773 K with 792 MeV Ar-ions to fluences of 2.3×10^20 and 4.6×10^20 ions/m2, respectively. The variation of the microstructures of the Reduced-activation ferritic/martensitic （RAFM） steel samples with the Ar-ion penetration depth is investigated using a transmission electron microscope （TEM）. Prom analyses of the microstrueture changes along with the Ar-ions penetrating depth, it is found that high-density cavities form in the peak damage region. The average size and the number density of the cavities depend strongly on the damage level and Ar-atom concentration. Swelling due to the formation of cavities increases significantly with an increased damage level, and the existence of deposited Ar-atoms also enhances the growth of the average size of the cavities. The effect of atom displacements and Ar-atoms on the swelling of the RAFM steel under high energy Ar-ion irradiation is discussed briefly.

关 键 词：RAFM steel IRRADIATION TEM CAVITY SWELLING 

分 类 号：O571.33[理学—粒子物理与原子核物理]