Vickers hardness change of the Chinese low-activation ferritic/martensitic steel CLF-1 irradiated with high-energy heavy ions

doi:10.1088/2058-6272/ab62e5

	Vickers hardness change of the Chinese low-activation ferritic/martensitic steel CLF-1 irradiated with high-energy heavy ions
	Ding, Zhaonan 1,2; Zhang, Chonghong 1; Yang, Yitao 1; Chen, Yuguang 1,2; Zhang, Xianlong 1; Song, Yin 1; Ma, Tongda 3; Xu, Yuping 4; Luo, Guangnan 4
刊名	PLASMA SCIENCE & TECHNOLOGY
	2020-05-01
卷号	22
关键词	CLF-1 RAFM steel heavy ions irradiation hardening
ISSN号	1009-0630
DOI	10.1088/2058-6272/ab62e5
通讯作者	Zhang, Chonghong(c.h.zhang@impcas.ac.cn)
英文摘要	In the present work, the irradiation hardening behavior of a Chinese low-activation ferritic/ martensitic steel CLF-1, a candidate for fusion reactor blankets, is studied. Specimens were irradiated with high-energy N-14 and Fe-56 ions at the terminal of a cyclotron to three successively increasing damage levels of 0.05, 0.1 and 0.2 displacements per atom (dpa) at about -50 degrees C. The energy of the incident ions was dispersed to 11 successively decreasing grades using an energy degrader, thereby generating an atomic displacement damage plateau in the specimens from the surface to a depth of 25 mu m, which is sufficiently broad for the Vickers hardness test. Eight different loads (i.e. 98 mN, 196 mN, 490 mN, 980 mN, 1.96 N, 4.9 N, 9.8 N and 19.6 N) were applied to the specimens to obtain the depth profiles of the Vickers hardness by using a micro-hardness tester. Hardening was observable at the lowest damage level, and increased with increasing irradiation dose. A power-law correlation of the Vickers hardness with the damage level (HV0 = 1.49 + 0.76 dpa(0.31)) is proposed. Testing with a nano-indentation technique was also performed, and a linear relationship between the Vickers micro-hardness and the nano-hardness (HV0 = 0.83H(0)) was observed. A comparison with other RAFM steels (CLAM, JLF-1, F82H, EUROFER97 etc.) under neutron or charged particle irradiation conditions shows that most of the RAFM steels exhibit similar power-law exponents in the dose dependence of irradiation hardening. The difference in the irradiation hardening may be attributed to differences in microstructure prior to irradiation.
资助项目	National Magnetic Confinement Fusion Program[2011GB108003] ; National Natural Science Foundation of China[U1532262]
WOS关键词	ODS FERRITIC STEELS ; MECHANICAL-PROPERTIES ; NANO-INDENTATION ; MICROSTRUCTURE ; DAMAGE
WOS研究方向	Physics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000537710400001
资助机构	National Magnetic Confinement Fusion Program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103107]
专题	中国科学院合肥物质科学研究院
通讯作者	Zhang, Chonghong
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 3.Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China 4.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Ding, Zhaonan,Zhang, Chonghong,Yang, Yitao,et al. Vickers hardness change of the Chinese low-activation ferritic/martensitic steel CLF-1 irradiated with high-energy heavy ions[J]. PLASMA SCIENCE & TECHNOLOGY,2020,22.
APA	Ding, Zhaonan.,Zhang, Chonghong.,Yang, Yitao.,Chen, Yuguang.,Zhang, Xianlong.,...&Luo, Guangnan.(2020).Vickers hardness change of the Chinese low-activation ferritic/martensitic steel CLF-1 irradiated with high-energy heavy ions.PLASMA SCIENCE & TECHNOLOGY,22.
MLA	Ding, Zhaonan,et al."Vickers hardness change of the Chinese low-activation ferritic/martensitic steel CLF-1 irradiated with high-energy heavy ions".PLASMA SCIENCE & TECHNOLOGY 22(2020).