Nanoindentation on V-4Ti alloy irradiated by H and He ions

doi:10.1016/j.jnucmat.2015.01.020

	Nanoindentation on V-4Ti alloy irradiated by H and He ions
	Song, Y1 ; Yang, YT1 ; Zhang, CH1 ; Gou, J1 ; Liu, J 2; Meng, YC 1; Xian, YQ 2
刊名	JOURNAL OF NUCLEAR MATERIALS
	2015
卷号	459 期号:459 页码:1-4
ISSN号	0022-3115
DOI	10.1016/j.jnucmat.2015.01.020
英文摘要	V-4Ti and V samples were irradiated by H/He ions with various energies to produce a damage plateau in the region from surface to the depth of 1.5 um at room temperature. Nanoindentation was performed to investigate the hardening behavior of the two materials under irradiation. It is found that the relation of maximum depth of plastic zone and indentation depth is not a fixed value. The maximum depth of plastic zone decreases with increase of damage level. Nix and Gao model was used to fit the measured hardness to obtain a hardness value H-o excluding indentation size effect (ISE), which can be used to characterize the hardening effect induced by irradiation. After fitting the data of H-o, it is found that there is an exponential relation between the H-o and damage level for both the V-4Ti and V materials. When the damage level is higher than similar to 0.2 dpa, the hardness increases slowly, this indicates a slow increase of pinning centers in samples at this damage level. Comparing the hardening fraction of V-4Ti and V samples, significant hardening can be seen for V sample, and it becomes severe especially at damage higher than similar to 0.2 dpa. The irradiation hardening resistance property of V-4Ti alloy is better than that of pure V. (C) 2015 Elsevier B.V. All rights reserved.
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资助项目	National Science Foundation of China[10975165]
WOS关键词	DISPERSION-STRENGTHENED STEEL ; VANADIUM-BASE ALLOYS ; FE-CR ALLOYS ; MECHANICAL-PROPERTIES ; NEUTRON-IRRADIATION ; BEAM IRRADIATION ; INDENTATION ; BEHAVIOR ; REACTOR ; HELIUM
WOS研究方向	Materials Science ; Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000350710700001
内容类型	期刊论文
源URL	[http://ir.impcas.ac.cn/handle/113462/14978]
专题	近代物理研究所_能源材料研究组近代物理研究所_材料研究中心
作者单位	1.中国科学院近代物理研究所 2.中国科学院大学
推荐引用方式 GB/T 7714	Song, Y,Yang, YT,Zhang, CH,et al. Nanoindentation on V-4Ti alloy irradiated by H and He ions[J]. JOURNAL OF NUCLEAR MATERIALS,2015,459(459):1-4.
APA	Song, Y.,Yang, YT.,Zhang, CH.,Gou, J.,Liu, J.,...&Xian, YQ.(2015).Nanoindentation on V-4Ti alloy irradiated by H and He ions.JOURNAL OF NUCLEAR MATERIALS,459(459),1-4.
MLA	Song, Y,et al."Nanoindentation on V-4Ti alloy irradiated by H and He ions".JOURNAL OF NUCLEAR MATERIALS 459.459(2015):1-4.