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Nanoindentation on an oxide dispersion strengthened steel and a ferritic/martensitic steel implanted with He ions

文献类型：期刊论文

作者Kang, SH1; Jang, J1; Zhang, CH1; Yang, YT1,2
刊名JOURNAL OF NUCLEAR MATERIALS
出版日期2014
卷号455期号:1-3页码:325-329
ISSN号0022-3115
DOI10.1016/j.jnucmat.2014.07.004
英文摘要ODS steel MA956 and F/M steel T92 were implanted with 30 key He ions to fluences of 3.0 x 10(14) (0.013 at.%/0.0046 dpa), 3.0 x 10(15) (0.13 at.%/0.046 dpa), 3.0 x 10(16) (1.3 at%/0.46 dpa) and 1.0 x 10(17) ions/cm(2) (4.5 at%/1.5 dpa) at room temperature. Nanoindentation and TEM were used to investigate the nanohardness and microstructure change induced by He ion implantation. TEM results showed that He bubbles and a damage zone (similar to 250 nm) were observed in both materials at He concentration of 0.13 at.%, small cracks or connected bubbles in surface near region formed at He concentration of 4.5 at.%. Nanoindentation results showed that evident hardness increase was observed at the depth of 38 nm. The hardness peak at 38 nm shifted to 58 nm at He concentration of 4.5 at.%, which could be associated with the formation of small cracks or connected bubbles in surface near region. The damage layer was thin and close to surface, a method, proposed by Hosemann basing on the "rule of mixtures" model, was used to estimate the hardening effects from defects and He in this layer. The estimated results showed that the hardness increased rapidly with damage at low damage level, and started to increase slowly and presented a saturation trend at the damage level higher than similar to 0.2 dpa. From the hardening fraction, significant hardening occurred for T92 compared with that for MA956, which indicated that ODS steel MA956 was better than F/M steel T92 in hardening resistance induced by He at room temperature. (C) 2014 Elsevier B.V. All rights reserved.
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WOS关键词BEAM-IRRADIATED MATERIALS ; MECHANICAL-PROPERTIES ; NANO-INDENTATION ; HELIUM ; ALLOYS ; METALS ; MICROSTRUCTURE ; BEHAVIOR
WOS研究方向Materials Science ; Nuclear Science & Technology
语种英语
WOS记录号WOS:000348003600061
出版者ELSEVIER SCIENCE BV
源URL[http://ir.impcas.ac.cn/handle/113462/14981]  
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
作者单位1.中国科学院近代物理研究所
2.Korea Atomic Energy Research Institute
推荐引用方式
GB/T 7714		 Kang, SH,Jang, J,Zhang, CH,et al. Nanoindentation on an oxide dispersion strengthened steel and a ferritic/martensitic steel implanted with He ions[J]. JOURNAL OF NUCLEAR MATERIALS,2014,455(1-3):325-329.
APA Kang, SH,Jang, J,Zhang, CH,&Yang, YT.(2014).Nanoindentation on an oxide dispersion strengthened steel and a ferritic/martensitic steel implanted with He ions.JOURNAL OF NUCLEAR MATERIALS,455(1-3),325-329.
MLA Kang, SH,et al."Nanoindentation on an oxide dispersion strengthened steel and a ferritic/martensitic steel implanted with He ions".JOURNAL OF NUCLEAR MATERIALS 455.1-3(2014):325-329.

入库方式： OAI收割

来源：近代物理研究所

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