中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 合肥物质科学研究院
  3. 中国科学院合肥物质科学研究院
  4. 中科院等离子体物理研究所
Hardening of reduced activation ferritic/martensitic steels under the irradiation of high-energy heavy-ion

文献类型：期刊论文

作者Ding Zhao-Nan1; Yang Yi-Tao1; Song Yin1; Zhang Li-Qing1; Gou Jie1; Zhang Chong-Hong1; Luo Guang-Nan2
刊名ACTA PHYSICA SINICA
出版日期2017-06-05
卷号66期号:11页码:1-10
关键词Reduced Activation Ferritic/martensitic Steel N/fe-ions Irradiation Hardening Vacancy Clusters
DOI10.7498/aps.66.112501
文献子类Article
英文摘要In order to study the irradiation responses of reduced activation ferritic/martensitic (RAFM) steels which are candidates for fusion reactors, a reduced activation steel is irradiated at a terminal of HIRFL (heavy ion research facility in Lanzhou) with 63 MeV N-14 ions and 336 MeV Fe-56 ions at -50 degrees C. The energies of the incident N/Fe ions are varied from 0.22 MeV/u to 6.17 MeV/u by using an energy degrader at the terminal, so that a plateau region of an atomic displacement damage (0.05-0.2 dpa) is obtained from the near surface to a depth of 24 mu m in the specimens. Nanoindentation technique is used to investigate the nano-hardness changes of the samples before and after irradiation. The constant stiffness measurement is used to obtain the depth profile of hardness. The Nix-Gao model taking account of the indentation size effect (ISE) is used to fit the measured hardness and thus a hardness value excluding ISE is obtained. Consequently, the soft substrate effect for lower energy ion irradiation is effectively avoided. It is observed that there seems to be a power function relationship between the hardness and damage for the RAFM steel. The hardness initially increases significantly with the increase of irradiation damage, then increases slowly when the damage reaches to about 0.2 dpa. Positron annihilation is performed to investigate the defect evolution in the material. The positron annihilation lifetime spectra show that the long-lifetime proportion of the RAFM steel increases significantly after being irradiated. This means vacancy clusters are produced by the irradiation, resulting in the change of mechanics property. Even at low irradiation dose, point defects with high density are generated in the steel specimens, and subsequently aggregate into defect clusters, thereby suppressing the dislocation slip.
WOS关键词POSITRON-ANNIHILATION ; INDENTATION ; PROFILES ; DAMAGE ; SCALE
WOS研究方向Physics
语种英语
WOS记录号WOS:000403091100006
资助机构Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; Joint Funds of the National Natural Science Foundation of China(U1532262) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003) ; National Magnetic Confinement Fusion Program, China(2011GB108003)
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/31939]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Ding Zhao-Nan,Yang Yi-Tao,Song Yin,et al. Hardening of reduced activation ferritic/martensitic steels under the irradiation of high-energy heavy-ion[J]. ACTA PHYSICA SINICA,2017,66(11):1-10.
APA Ding Zhao-Nan.,Yang Yi-Tao.,Song Yin.,Zhang Li-Qing.,Gou Jie.,...&Luo Guang-Nan.(2017).Hardening of reduced activation ferritic/martensitic steels under the irradiation of high-energy heavy-ion.ACTA PHYSICA SINICA,66(11),1-10.
MLA Ding Zhao-Nan,et al."Hardening of reduced activation ferritic/martensitic steels under the irradiation of high-energy heavy-ion".ACTA PHYSICA SINICA 66.11(2017):1-10.

入库方式： OAI收割

来源：合肥物质科学研究院

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。