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

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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 and GOU Jie. Cavity swelling of RAFM steel under 792 MeV Ar-ions irradiation at 773 K[J]. Chinese Physics C, 2013, 37(8): 088201. doi: 10.1088/1674-1137/37/8/088201
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 and GOU Jie. Cavity swelling of RAFM steel under 792 MeV Ar-ions irradiation at 773 K[J]. Chinese Physics C, 2013, 37(8): 088201.  doi: 10.1088/1674-1137/37/8/088201 shu
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Received: 2012-07-26
Revised: 1900-01-01
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Cavity swelling of RAFM steel under 792 MeV Ar-ions irradiation at 773 K

    Corresponding author: WANG Zhi-Guang,

Abstract: China reduced-activation ferritic/martensitic steel is irradiated at 773 K with 792 MeV Ar-ions to fluences of 2.3×1020 and 4.6× 1020 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). From analyses of the microstructure 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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