Helium self-trapping and diffusion behaviors in deformed 316L stainless steel exposed to high flux and low energy helium plasma
文献类型：期刊论文
| 作者 | Cheng, L; Gong YH(龚毅豪) ; Jin SX(靳硕学); Zhu T(朱特); Cao XZ(曹兴忠); Wang BY(王宝义); Gong, YH; Jin, SX; Zhu, T; Cao, XZ
|
| 刊名 | NUCLEAR FUSION
 |
| 出版日期 | 2018 |
| 卷号 | 58期号:4页码:46011 |
| 关键词 | helium self-trapping HemVn complex helium diffusion dislocation 316L steel |
| ISSN号 | 0029-5515 |
| DOI | 10.1088/1741-4326/aaad19 |
| 文献子类 | Article |
| 英文摘要 | A large number of dislocation networks were introduced in to 316L stainless steel by cold rolling. Subsequently, low energy (40 eV) helium ions were implanted by exposing the steel to helium plasma. Thermal desorption and positron annihilation spectroscopy were used to study the behavior of helium in the presence of dislocations, with emphasis on helium self-trapping and migration behaviors. Helium desorption behaviour from different helium trapping states was measured by the thermal desorption spectroscopy. Most of the helium desorbed from the HemVn clusters, and the corresponding desorption peak is located at similar to 650K. The desorption peak from helium-dislocation clusters (HemD) is at approximately 805 K. The effect of annealing on the defect evolution was investigated by positron annihilation spectroscopy. For the specimen exposed to helium plasma without displacement damage, the increment of S parameter meant the existence of helium self-trapping behavior (HemVn). Helium atoms could diffuse two to three orders of magnitude deeper than the implantation depth calculated by SRIM. The diffusing helium atoms were gradually trapped by dislocation lines and formed HemD. Elevated temperatures enhance the self-trapping behavior and cause helium atoms to dissociate/desorb from the HemVn clusters, increasing the S parameters at 473-673 K. The gradual recovery of vacancies in the clusters decreased the S parameter above 673 K. |
| 电子版国际标准刊号 | 1741-4326 |
| WOS关键词 | VACANCY-TYPE DEFECTS ; POSITRON-ANNIHILATION ; EDGE DISLOCATIONS ; ION IRRADIATION ; MODEL ALLOYS ; ALPHA-IRON ; FE ; CLUSTERS ; NI ; EVOLUTION |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000425980900001 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/285676]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 通讯作者 | Jin SX(靳硕学) |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Cheng, L,Gong YH,Jin SX,et al. Helium self-trapping and diffusion behaviors in deformed 316L stainless steel exposed to high flux and low energy helium plasma[J]. NUCLEAR FUSION,2018,58(4):46011. |
| APA | Cheng, L.,龚毅豪.,靳硕学.,朱特.,曹兴忠.,...&Wang, BY.(2018).Helium self-trapping and diffusion behaviors in deformed 316L stainless steel exposed to high flux and low energy helium plasma.NUCLEAR FUSION,58(4),46011. |
| MLA | Cheng, L,et al."Helium self-trapping and diffusion behaviors in deformed 316L stainless steel exposed to high flux and low energy helium plasma".NUCLEAR FUSION 58.4(2018):46011. |
入库方式： OAI收割
来源：高能物理研究所
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