Hardening of ODS ferritic steels under irradiation with high-energy heavy ions
文献类型：期刊论文
| 作者 | Jang, J.3; Yang, Y. T.1; Ding, Z. N.1; Zhang, C. H.1 ; Kimura, A.2; Song, Y.1
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| 刊名 | JOURNAL OF NUCLEAR MATERIALS
 |
| 出版日期 | 2017-09-01 |
| 卷号 | 493页码:53-61 |
| 关键词 | ODS ferritic steels Heavy-ions Irradiation hardening Oxide dispersoids |
| ISSN号 | 0022-3115 |
| DOI | 10.1016/j.jnucmat.2017.05.040 |
| 英文摘要 | Influence of the nanoscale oxide particles on mechanical properties and irradiation resistance of oxidedispersion-strengthened (ODS) ferritic steels is of critical importance for the use of the material in fuel cladding or blanket components in advanced nuclear reactors. In the present work, impact of structures of oxide dispersoids on the irradiation hardening of ODS ferritic steels was studied. Specimens of three high-Cr ODS ferritic steels containing oxide dispersoids with different number density and average size were irradiated with high-energy Ni ions at about -50 degrees C. The energy of the incident Ni ions was varied from 12.73 MeV to 357.86 MeV by using an energy degrader at the terminal so that a plateau of atomic displacement damage (similar to 0.8 dpa) was produced from the near surface to a depth of 24 mm in the specimens. A nanoindentor (in constant stiffness mode with a diamond Berkovich indenter) and a Vickers micro-hardness tester were used to measure the hardeness of the specimens. The Nix-Gao model taking account of the indentation size effect (ISE) was used to fit the hardness data. It is observed that the soft substrate effect (SSE) can be diminished substantially in the irradiated specimens due to the thick damaged regions produced by the Ni ions. A linear correlation between the nano-hardeness and the micro-hardness was found. It is observed that a higher number density of oxide dispersoids with a smaller average diameter corresponds to an increased resistance to irradiation hardening, which can be ascribed to the increased sink strength of oxides/matrix interfaces to point defects. The rate equation approach and the conventional hardening model were used to analyze the influence of defect clusters on irradiation hardening in ODS ferritic steels. The numerical estimates show that the hardening caused by the interstitial type dislocation loops follows a similar trend with the experiment data. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | INDENTATION HARDNESS ; NANO-INDENTATION ; RADIATION-DAMAGE ; FUSION ENERGY ; NE-IONS ; NANOINDENTATION ; HELIUM ; METALS ; ALLOYS ; SCALE |
| 资助项目 | National Science Foundation of China[U1532262] ; National Magnetic Confinement Fusion Program[2011GB108003] |
| WOS研究方向 | Materials Science ; Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000408044000007 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Science Foundation of China ; National Magnetic Confinement Fusion Program |
| 源URL | [http://119.78.100.186/handle/113462/24412]  |
| 专题 | 近代物理研究所_能源材料研究组 近代物理研究所_材料研究中心 |
| 通讯作者 | Zhang, C. H. |
| 作者单位 | 1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China 2.Kyoto Univ, Inst Adv Energy, Uji, Kyoto 6110011, Japan 3.Korea Atom Energy Res Inst, Daejeon 305353, South Korea |
| 推荐引用方式 GB/T 7714 | Jang, J.,Yang, Y. T.,Ding, Z. N.,et al. Hardening of ODS ferritic steels under irradiation with high-energy heavy ions[J]. JOURNAL OF NUCLEAR MATERIALS,2017,493:53-61. |
| APA | Jang, J.,Yang, Y. T.,Ding, Z. N.,Zhang, C. H.,Kimura, A.,&Song, Y..(2017).Hardening of ODS ferritic steels under irradiation with high-energy heavy ions.JOURNAL OF NUCLEAR MATERIALS,493,53-61. |
| MLA | Jang, J.,et al."Hardening of ODS ferritic steels under irradiation with high-energy heavy ions".JOURNAL OF NUCLEAR MATERIALS 493(2017):53-61. |
入库方式： OAI收割
来源：近代物理研究所
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