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Positron annihilation Doppler broadening spectroscopy study on Fe-ion irradiated NHS steel

文献类型：期刊论文

作者Li, Yuanfei2,3,4; Wang, Ji2,3,4; Song, Peng2,3; Zhang, Peng1; Cao, Xingzhong1; Zhu, Huiping2,3; Gao, Xing2; Wang, Zhiguang2; Cui, Minghuan2; Li, Bingsheng2
刊名NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
出版日期2015-02-01
卷号344页码:5-10
关键词F/m Steel Fe-ion Irradiation Positron Annihilation Spectroscopy Vacancy-type Defects
ISSN号0168-583X
DOI10.1016/j.nimb.2014.11.051
文献子类Article
英文摘要In order to study the evolution of irradiation-induced vacancy-type defects at different irradiation fluences and temperatures, a new type of ferritic/martensitic (F/M) steel named NHS (Novel High Silicon) was irradiated by 3.25 MeV Fe-ion at room temperature and 723 K to fluences of 4.3 x 10(15) and 1.7 x 10(16) ions/cm(2). After irradiation, vacancy-type defects were investigated with variable-energy positron beam Doppler broadening spectra. Energetic Fe-ions produced a large number of vacancy-type defects in the NHS steel, but one single main type of vacancy-type defect was observed in both unirradiated and irradiated samples. The concentration of vacancy-type defects decreased with increasing temperature. With the increase of irradiation fluence, the concentration of vacancy-type defects increased in the sample irradiated at RT, whereas for the sample irradiated at 723 K, it decreased. The enhanced recombination between vacancies and excess interstitial Fe atoms from deeper layers, and high diffusion rate of self-interstitial atoms further improved by diffusion via grain boundary and dislocations at high temperature, are thought to be the main reasons for the reversed trend of vacancy-type defects between the samples irradiated at RT and 723 K. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词FERRITIC/MARTENSITIC STEELS ; CLAM STEEL ; DEFECT ; ALLOYS ; EVOLUTION ; VACANCY ; ENERGY ; BEAMS ; IRON ; T91
资助项目National Natural Science Foundation of China[91026002] ; National Natural Science Foundation of China[91126011] ; National Natural Science Foundation of China[11275005]
WOS研究方向Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种英语
WOS记录号WOS:000349583000002
出版者ELSEVIER SCIENCE BV
源URL[http://119.78.100.186/handle/113462/50035]  
专题近代物理研究所_先进核能材料研究室（ADS）
通讯作者Wang, Zhiguang
作者单位1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Lanzhou Univ, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Li, Yuanfei,Wang, Ji,Song, Peng,et al. Positron annihilation Doppler broadening spectroscopy study on Fe-ion irradiated NHS steel[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,2015,344:5-10.
APA Li, Yuanfei.,Wang, Ji.,Song, Peng.,Zhang, Peng.,Cao, Xingzhong.,...&Zhu, Yabin.(2015).Positron annihilation Doppler broadening spectroscopy study on Fe-ion irradiated NHS steel.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS,344,5-10.
MLA Li, Yuanfei,et al."Positron annihilation Doppler broadening spectroscopy study on Fe-ion irradiated NHS steel".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 344(2015):5-10.

入库方式： OAI收割

来源：近代物理研究所

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