In situ transmission electron microscopy study and molecular dynamics simulation of dislocation loop evolution in FeCrAl alloys under Fe+ irradiation
文献类型：期刊论文
| 作者 | Li, Y. P.3,6; Yu, M. S.1,2; Ran, G.3,6; Gao, N.1,2,4; Chen, Y.3,6 ; Han, Q.3,6; Wang, H.5; Zhou, Z. H.3,6; Huang, J. C.3,6
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| 刊名 | MATERIALS TODAY ENERGY
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 21页码:12 |
| ISSN号 | 2468-6069 |
| 关键词 | In situ TEM observation Loop reaction Molecular dynamics simulation Fuel cladding Irradiation damage |
| DOI | 10.1016/j.mtener.2021.100788 |
| 通讯作者 | Ran, G.(gran@xmu.edu.cn) ; Gao, N.(ning.gao@sdu.edu.cn) |
| 英文摘要 | FeCrAl alloys with excellent comprehensive properties are the most promising candidates to replace zirconium alloy fuel claddings. In our study, the dislocation loop evolution including initiation, migration, merging, growth, annihilation, and reaction in a FeCrAl alloy was investigated by using in situ transmission electron microscopy during 400 keV Fe+ irradiation. The mechanism induced the growth of dislocation loops including the absorption of high-mobility point defects and defect clusters and the merging of two or more dislocation loops of different sizes. In the initial stage of irradiation, the loop density was relatively stable and the loop size increased rapidly with the increase in irradiation dose; however, owing to the formation of dislocation networks, the loop density decreased significantly in the later stage of irradiation. Both b = 1/2 < 111 > and b = < 100 > dislocation loops were formed in the FeCrAl alloy. The ratio of <100> loops was 49% after irradiation with 0.14 dpa at 723 K. Molecular dynamics simulations displayed the reaction of dislocation loops with different Burgers vectors and sizes. Although the presence of alloying elements (Cr and Al) would prohibit or delay the interaction process, loop merging continued owing to the atomic rearrangement of dislocation loops. (C) 2021 Elsevier Ltd. All rights reserved. |
| WOS关键词 | INTERSTITIAL CLUSTERS ; ION IRRADIATION ; MICROSTRUCTURE ; TEMPERATURE ; DAMAGE ; IRON ; DIFFUSION ; CORROSION ; ORIGIN |
| 资助项目 | National Natural Science Foundation of China[U1967211] ; National Natural Science Foundation of China[12075141] ; National Natural Science Foundation of China[11975191] ; National Natural Science Foundation of China[U1832112] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000701824000018 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://119.78.100.186/handle/113462/136279]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Ran, G.; Gao, N. |
| 作者单位 | 1.Shandong Univ, Inst Frontier & Interdisciplinary Sci, Qingdao 266237, Peoples R China 2.Shandong Univ, Key Lab Particle Phys & Particle Irradiat MOE, Qingdao 266237, Peoples R China 3.Fujian Res Ctr Nucl Engn, Xiamen 361102, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 5.Nucl Power Inst China, Sci & Technol Reactor Fuel & Mat Lab, Chengdu 610041, Peoples R China 6.Xiamen Univ, Coll Energy, Xiamen 361102, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Y. P.,Yu, M. S.,Ran, G.,et al. In situ transmission electron microscopy study and molecular dynamics simulation of dislocation loop evolution in FeCrAl alloys under Fe+ irradiation[J]. MATERIALS TODAY ENERGY,2021,21:12. |
| APA | Li, Y. P..,Yu, M. S..,Ran, G..,Gao, N..,Chen, Y..,...&Huang, J. C..(2021).In situ transmission electron microscopy study and molecular dynamics simulation of dislocation loop evolution in FeCrAl alloys under Fe+ irradiation.MATERIALS TODAY ENERGY,21,12. |
| MLA | Li, Y. P.,et al."In situ transmission electron microscopy study and molecular dynamics simulation of dislocation loop evolution in FeCrAl alloys under Fe+ irradiation".MATERIALS TODAY ENERGY 21(2021):12. |
入库方式： OAI收割
来源：近代物理研究所
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