Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam

	Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam
	Lu EY(卢二阳); Cao XZ(曹兴忠); Jin SX(靳硕学); Zhang CX(张春雄); 张鹏(正); Zhu T(朱特); Gong YH(龚毅豪); Wang BY(王宝义); Lu, EY; Cao, XZ
刊名	JOURNAL OF NUCLEAR MATERIALS
	2015
卷号	458 页码:240-244
通讯作者	王宝义
英文摘要	The evolution of microstruture for Fe16.7Cr14.5Ni model alloy and 316 stainless steel irradiated with 140 keV He ions were studied by Positron annihilation spectroscopy. The fluences were 1 x 10(16) and 5 x 10(16) He ions/cm(2). The irradiation temperature was room temperature and 573 K, respectively. The variation of S parameter-incident positron energy profile indicated that large amount of vacancy-type defects formed after He ion irradiation. Meanwhile, helium atoms deposited in bulk and certain amount of He-vacancy complexes were formed. The vacancy-type defects could be the major defects in track region and He-vacancy complexes would be the main defects in cascade region. The vacancy-type defects could migrate and aggregate to form vacancy clusters and even microvoids at elevated temperature irradiation. The diffusion mechanism of helium atoms might be changed at different irradiation temperature. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	Materials Science; Nuclear Science & Technology; Mining & Mineral Processing
类目[WOS]	Materials Science, Multidisciplinary ; Nuclear Science & Technology ; Mining & Mineral Processing
收录类别	SCI ; EI ; CA
WOS记录号	WOS:000349169600028
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/228083]
专题	高能物理研究所_多学科研究中心
推荐引用方式 GB/T 7714	Lu EY,Cao XZ,Jin SX,et al. Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam[J]. JOURNAL OF NUCLEAR MATERIALS,2015,458:240-244.
APA	卢二阳.,曹兴忠.,靳硕学.,张春雄.,张鹏.,...&Wang, BY.(2015).Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam.JOURNAL OF NUCLEAR MATERIALS,458,240-244.
MLA	卢二阳,et al."Investigation of vacancy-type defects in helium irradiated FeCrNi alloy by slow positron beam".JOURNAL OF NUCLEAR MATERIALS 458(2015):240-244.