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

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...

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Published inChinese physics C Vol. 37; no. 8; pp. 88 - 92
Main Author 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
Format Journal Article
LanguageEnglish
Published 01.08.2013
Subjects
Ar原子
Damage
Ferritic stainless steels
Holes
Irradiation
Martensitic stainless steels
Microstructure
Steels
Swelling
平均粒径
损伤程度
氩离子
能量密度
辐照肿胀
透射电子显微镜
马氏体钢
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ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/37/8/088201

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Summary: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.
Bibliography:SHEN Tie-Long WANG Zhi-Guang YAO Cun-Feng SUN Jian-Rong WEI Kong-Fang ZHU Ya-Bin PANG Li-Long CUI Ming-Huan LI Yuan-Fei MA Yi-Zhun SHENG Yan-Bin GOU Jie 1 Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2 University of Chinese Academy of Sciences, Beijing 100049, China
11-5641/O4
RAFM steel, irradiation, TEM, cavity, swelling
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.
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/37/8/088201