| Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten | |
| Ji, Changqiu; Hu JQ(胡剑桥); Zhuang, Zhuo; Cui, Yinan | |
| Source Publication | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 2023-07 | |
| Volume | 165Pages:103620 |
| ISSN | 0749-6419 |
| Abstract | In fusion reactor environment, helium bubble acts as a crucial inducement to the performance degradation of plasma facing tungsten, leading to irradiation hardening and embrittlement. The dislocation interacted with helium bubble directly controls the service reliability and safety of irradiated materials. However, the fundamental question regarding the mechanism and quanti-tative model of this interaction between dislocation and helium-bubble remains largely unex-plored. Based on systematic molecular dynamics studies, the interaction mechanism phase diagram is built as a function of helium bubble characters for different types of dislocations. The atomistically-informed mechanism-based models of irradiation hardening and dislocation-helium bubble reaction kinetics are developed, which consider the climb behavior of edge dislocation, the temperature dependent mobility of screw dislocation, as well as the effects of helium-to-vacancy ratio and size of helium bubble. These models can be directly used in micro and meso scale simulations, such as discrete dislocation dynamics and crystal plasticity models. Further-more, the models well predict the macroscopic experimental results. |
| Keyword | Helium bubble Irradiation Tungsten Dislocation Interaction |
| DOI | 10.1016/j.ijplas.2023.103620 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000998673700001 |
| Funding Organization | National Natural Science Foundation of China [12172194, 12222205, 11972208, 11921002] ; Key R & D projects of the Ministry of Science and Technology [2022YFB4603000] |
| Classification | 一类 |
| Ranking | 2 |
| Contributor | Cui, YA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92241 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.(Ji Changqiu, Zhuang Zhuo, Cui Yinan) Tsinghua Univ Sch Aerosp Engn Dept Engn Mech Appl Mech Lab Beijing 100084 Peoples R China 2.(Hu Jianqiao) Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China |
| Recommended Citation GB/T 7714 | Ji, Changqiu,Hu JQ,Zhuang, Zhuo,et al. Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2023,165:103620.Rp_Au:Cui, YA |
| APA | Ji, Changqiu,胡剑桥,Zhuang, Zhuo,&Cui, Yinan.(2023).Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten.INTERNATIONAL JOURNAL OF PLASTICITY,165,103620. |
| MLA | Ji, Changqiu,et al."Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten".INTERNATIONAL JOURNAL OF PLASTICITY 165(2023):103620. |
| Files in This Item: | Download All | |||||
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| Jp2023Fa142.pdf（5407KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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