Characterization of dose dependent mechanical properties in helium implanted tungsten

doi:10.1016/j.jnucmat.2018.07.004

	Characterization of dose dependent mechanical properties in helium implanted tungsten
	Cao, XZ; Chen, WQ; Wang, XY; Xiao, XZ; Qu, SL; Jia, YZ; Cui, W; Xu, B; Liu, W; Cao XZ(曹兴忠)
刊名	JOURNAL OF NUCLEAR MATERIALS
	2018
卷号	509 页码:260-266
关键词	Tungsten He implantation Mechanical properties Spherical nanoindentation Molecular dynamics
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2018.07.004
文献子类	Article
英文摘要	In this work, we utilized spherical nanoindentation to investigate the mechanical property changes of helium (He) implanted tungsten (W) at different damage doses. According to the indentation stress-strain curve, two dose dependent phenomena were revealed: one is an increase in yield stress with increasing damage dose, and the other is enhanced softening following yield. Experimental measurements such as transmission electron microscopy (TEM) and positron annihilation spectroscopy (PAS) techniques, as well as molecular dynamics (MD) simulation were combined to explore the intrinsic mechanism of the dose dependent phenomena. This study proposed an efficient and promising way to measure the damage of the plasma facing materials and established an effective correlation between the mechanical property changes of He implanted W and its microstructure evolutions. (C) 2018 Elsevier B.V. All rights reserved.
电子版国际标准刊号	1873-4820
WOS关键词	MOLECULAR-DYNAMICS SIMULATION ; STRESS-STRAIN CURVES ; INDENTATION SIZE ; SCREW DISLOCATIONS ; SPHERICAL NANOINDENTATION ; VACANCY CLUSTERS ; EDGE DISLOCATION ; ION IRRADIATION ; PIPE DIFFUSION ; PLASTIC ZONE
WOS研究方向	Materials Science ; Nuclear Science & Technology
语种	英语
WOS记录号	WOS:000442483300029
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286234]
专题	高能物理研究所_多学科研究中心
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	Cao, XZ,Chen, WQ,Wang, XY,et al. Characterization of dose dependent mechanical properties in helium implanted tungsten[J]. JOURNAL OF NUCLEAR MATERIALS,2018,509:260-266.
APA	Cao, XZ.,Chen, WQ.,Wang, XY.,Xiao, XZ.,Qu, SL.,...&曹兴忠.(2018).Characterization of dose dependent mechanical properties in helium implanted tungsten.JOURNAL OF NUCLEAR MATERIALS,509,260-266.
MLA	Cao, XZ,et al."Characterization of dose dependent mechanical properties in helium implanted tungsten".JOURNAL OF NUCLEAR MATERIALS 509(2018):260-266.