Effect of He-injection on irradiation damage of high Mn-Cr steel

被引：1
|
作者：
Bae, DS [1 ]
Lee, SP
Nahm, SH
Choi, JW
Takahashi, H
机构：
[1] Dong Eui Univ, Dept Mat & Met Engn, Pusan 614714, South Korea
[2] Dong Eui Univ, Dept Mech Engn, Pusan 614714, South Korea
[3] Korea Res Inst Stand & Sci, Ctr Environm & Safety Management, Taejon 305600, South Korea
[4] Def Qual Assurance Agcy, Changwon Div Branch 2, Chang Won 641600, South Korea
[5] Hokkaido Univ, Ctr Adv Res Energy Technol, Sapporo, Hokkaido 0608628, Japan
来源：
PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5 | 2005年 / 475-479卷
关键词：
irradiation damage; electron-beam irradiation; electron/He+-ion dual-beam irradiation; electron-beam irradiation after He-injection; high Mn-Cr steel; high voltage electron microscope; in-situ observation; void; irradiation-induced segregation;
D O I：
10.4028/www.scientific.net/MSF.475-479.1425
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The high Mn-Cr austenitic steel for structure material of nuclear and/or fusion reactors from the point of view of the reduced radio-activation has been irradiated by using three irradiation modes of electron-beam irradiation, electron-beam irradiation after He-injection and electron/He+-ion dual-beam irradiation in 1250kV high voltage electron microscope (HVEM) connected with an ion accelerators to study the effect of He-injection on irradiation damage. Irradiation-induced segregation analyses were carried out by an energy dispersive X-ray analyzer (EDX) in a 200kV FE-TEM with beam diameter of about 0.5nm. Void formation was not observed in each irradiation condition. Grain boundary migration was observed in the case of electron/He+-ion dual-beam irradiation. Irradiation-induced segregations of Cr and Mn at grain boundary were observed in each irradiation condition. The amounts of Cr and Mn segregation decreased in the cases of electron-beam irradiation after He-injection compared with other irradiation conditions.
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页码：1425 / 1428
页数：4
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