Nucleation and growth of helium bubble at (110) twist grain boundaries in tungsten studied by molecular dynamics
文献类型：期刊论文
| 作者 | Li, Fang-Biao1; Ran, Guang1; Gao, Ning2,3; Zhao, Shang-Quan1; Li, Ning1
|
| 刊名 | CHINESE PHYSICS B
 |
| 出版日期 | 2019-08-01 |
| 卷号 | 28期号:8页码:9 |
| 关键词 | tungsten dislocation patterns ordered grain boundary structure plate-shape He bubble |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/28/8/085203 |
| 通讯作者 | Ran, Guang(gran@xmu.edu.cn) ; Gao, Ning(ning.gao@impcas.ac.cn) |
| 英文摘要 | Migration of He atoms and growth of He bubbles in high angle twist grain boundaries (HAGBs) in tungsten (W) are investigated by atomic simulation method. The energy and free volume (FV) of grain boundary (GB) are affected by the density and structure of dislocation patterns in GB. The migration energy of the He atom between the neighboring trapping sites depends on free volume along the migration path at grain boundary. The region of grain boundary around the He bubble forms an ordered crystal structure when He bubble grows at certain grain boundaries. The He atoms aggregate on the grain boundary plane to form a plate-shape configuration. Furthermore, high grain boundary energy (GBE) results in a large volume of He bubble. Thus, the nucleation and growth of He bubbles in twist grain boundaries depend on the energy of grain boundary, the dislocation patterns and the free volume related migration path on the grain boundary plane. |
| WOS关键词 | RADIATION-DAMAGE ; SIMULATION ; DIFFUSION ; RETENTION ; ATOMS ; BULK |
| 资助项目 | National Natural Science Foundation of China[11305136] ; National Natural Science Foundation of China[11675230] ; National Natural Science Foundation of China[11375242] ; National Natural Science Foundation of China[U1832112] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000481702800003 |
| 出版者 | IOP PUBLISHING LTD |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/132830]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Ran, Guang; Gao, Ning |
| 作者单位 | 1.Xiamen Univ, Coll Energy, Xiamen 361102, Fujian, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 73000, Gansu, Peoples R China 3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100094, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Fang-Biao,Ran, Guang,Gao, Ning,et al. Nucleation and growth of helium bubble at (110) twist grain boundaries in tungsten studied by molecular dynamics[J]. CHINESE PHYSICS B,2019,28(8):9. |
| APA | Li, Fang-Biao,Ran, Guang,Gao, Ning,Zhao, Shang-Quan,&Li, Ning.(2019).Nucleation and growth of helium bubble at (110) twist grain boundaries in tungsten studied by molecular dynamics.CHINESE PHYSICS B,28(8),9. |
| MLA | Li, Fang-Biao,et al."Nucleation and growth of helium bubble at (110) twist grain boundaries in tungsten studied by molecular dynamics".CHINESE PHYSICS B 28.8(2019):9. |
入库方式： OAI收割
来源：近代物理研究所
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