| He对低活性Fe-Cr-Mn(W,V)合金辐照产生点缺陷行为的影响 |
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| 引用本文： | 胡本芙,高桥平七郎.He对低活性Fe-Cr-Mn(W,V)合金辐照产生点缺陷行为的影响[J].金属学报,2004,40(9):955-961. |
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| 作者姓名： | 胡本芙 高桥平七郎 |
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| 作者单位： | 1. 北京科技大学材料科学与工程学院,北京,100083
2. 北海道大学先进能源工学研究中心,札幌,060-8628,日本 |
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| 摘 要： | 采用超高压电镜与离子加速器相连结的复合辐照装置，研究了注He对低活性Fe-Cr-Mn(W，V)合金辐照产生的点缺陷及二次缺陷行为的影响．实验结果表明：辐照初期形成的点缺陷与He相互作用，进而影响二次缺陷(位错、位错环和空洞)的形成；He明显促进位错密度增大和空洞核心形成，并导致空洞肿胀增加．对辐照产生的点缺陷与He相互作用的机理进行了理论分析。
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| 关 键 词： | Fe-Cr-Mn合金 辐照损伤 He 点缺陷团簇 |
| 文章编号： | 0412-1961(2004)09-0955-07 |
| 收稿时间： | 2003-09-29 |
| 修稿时间： | 2004-01-09 |
Effects of Helium on Behavior of Point Defect Produced by Irradiation in Low Activation Fe-Cr-Mn(W,V) Alloys |
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| HU Benfu,TAKAHASHI Heishichiro.Effects of Helium on Behavior of Point Defect Produced by Irradiation in Low Activation Fe-Cr-Mn(W,V) Alloys[J].Acta Metallurgica Sinica,2004,40(9):955-961. |
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| Authors: | HU Benfu TAKAHASHI Heishichiro |
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| Affiliation: | School of Materials Science and Technology, University of Science and Technology Beijing, Beijing 100083 |
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| Abstract: | In order to investigate the effects of helium on the excess point defects and secondary defects processes in low activation Fe-Cr-Mn(W, V) alloys during electron beam and electron-He+ ion dual beam irradiation, the in situ observation was carried out using a high voltage electron microscope connected with an ion accelerator. The experiment result indicates that the interaction between helium and point defect clusters formed in the early stage of irradiation affected the secondary defects (dislocation, dislocation loop and void) formation. The helium enhances the increase in dislocation density and void nucleation site obviously. As a result, the void swelling in Fe-Cr-Mn(W, V) alloy was enhanced. The mechanism of interaction between helium and point defects produced by irradiation was also discussed. |
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| Keywords: | Fe-Cr-Mn alloy irradiation damage helium point defect cluster |
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