Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten

doi:10.1016/j.ijplas.2023.103620

IMECH-IR > 非线性力学国家重点实验室

	Atomistically-informed hardening and kinetics models of helium bubble in irradiated tungsten
	Ji, Changqiu ; Hu JQ(胡剑桥); Zhuang, Zhuo ; Cui, Yinan
发表期刊	INTERNATIONAL JOURNAL OF PLASTICITY
	2023-07
卷号	165 页码:103620
ISSN	0749-6419
摘要	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.
关键词	Helium bubble Irradiation Tungsten Dislocation Interaction
DOI	10.1016/j.ijplas.2023.103620
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000998673700001
项目资助者	National Natural Science Foundation of China [12172194, 12222205, 11972208, 11921002] ; Key R & D projects of the Ministry of Science and Technology [2022YFB4603000]
论文分区	一类
力学所作者排名	2
RpAuthor	Cui, YA
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/92241
专题	非线性力学国家重点实验室
作者单位	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
推荐引用方式 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.
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.

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