Proton-irradiation induced defects in modified 310S steels characterized with positron annihilation spectroscopy and transmission electron microscopy

doi:10.1016/j.nimb.2018.04.040

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	Proton-irradiation induced defects in modified 310S steels characterized with positron annihilation spectroscopy and transmission electron microscopy
	Long, YX; Zhang, WP; Shen, ZY; Tang, R; Jin, SX; Song, YX; Wei, YX; Zhou, X; Chen, C; Guo, LP
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
	2018
卷号	427 页码:1-8
关键词	Irradiation damage Positron annihilation spectroscopy Transmission electron microscopy Austenitic stainless steels
ISSN号	0168-583X
DOI	10.1016/j.nimb.2018.04.040
文献子类	Article
英文摘要	An effective method to improve the irradiation resistance of austenitic stainless steels is adding oversized solutes into steels. In this work, the irradiation resistances of two type of modified 310S steels, in one of which Zr was added and in another Nb, Ta, and W were added, were investigated by proton irradiations at 563 K. Irradiation induced vacancy-type defects was characterized with positron annihilation spectroscopy (PAS), while dislocation loops and bubbles whose size are greater than 1 nm are characterized with transmission electron microscopy (TEM). It is found that the relative S parameter Delta S/S extracted from PAS is more effective than S parameter in evaluating the quantity of vacancy-type defects. It was revealed from Delta S/S that more vacancy-type defects produced in (Nb, Ta, W)-added steels than that in Zr-added steels, and this trend became more obvious with the dose increasing. S-W curves reveal that proton irradiation induced two kinds of vacancy-type defects, i.e vacancy clusters and proton-vacancy clusters. TEM observation shows that the density of small bubbles induced by proton in (Nb, Ta, W)-added steels is much higher than that in Zr-added steels. Both 1/3 <1 1 1> and 1/2 <1 1 0> dislocation loops were observed with TEM in all of the specimens. The mean size and number density of dislocation loops in (Nb, Ta, W)-added steels are slightly larger than that in Zr-added steels, and increased with increasing irradiation dose. Both PAS and TEM observations shows that irradiation damage in Zr-added steels is less serious than that (Nb, Ta, W)-added steels, and the possible mechanisms are discussed through the enhancement of point defect recombination by oversized solute atoms.
电子版国际标准刊号	1872-9584
WOS关键词	AUSTENITIC STAINLESS-STEELS ; RADIATION-INDUCED SEGREGATION ; GRAIN-BOUNDARY SEGREGATION ; HYDROGEN ; HELIUM ; ALLOYS ; BEHAVIOR ; ELEMENTS ; DAMAGE ; BEAM
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种	英语
WOS记录号	WOS:000440619100004
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286174]
专题	高能物理研究所_粒子天体物理中心高能物理研究所_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	Long, YX,Zhang, WP,Shen, ZY,et al. Proton-irradiation induced defects in modified 310S steels characterized with positron annihilation spectroscopy and transmission electron microscopy[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2018,427:1-8.
APA	Long, YX.,Zhang, WP.,Shen, ZY.,Tang, R.,Jin, SX.,...&靳硕学.(2018).Proton-irradiation induced defects in modified 310S steels characterized with positron annihilation spectroscopy and transmission electron microscopy.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,427,1-8.
MLA	Long, YX,et al."Proton-irradiation induced defects in modified 310S steels characterized with positron annihilation spectroscopy and transmission electron microscopy".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 427(2018):1-8.