TEM Characterization of Helium Bubbles in T91 and MNHS Steels Implanted with 200 keV He Ions at Different Temperatures
Modified novel high silicon steel （MNHS, a newly developed reduced-activation martensitic alloy） and commercial alloy Tgl are implanted with 200 keV He2＋ ions to a dose of 5 × 1020 ions/m2 at 300, 450 and 560~C. Transmission electron microscopy （TEM） is used to characterize the size and morphology o...
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| Published in | Chinese physics letters Vol. 32; no. 7; pp. 102 - 105 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
01.07.2015
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| Subjects | |
| Online Access | Get full text |
| ISSN | 0256-307X 1741-3540 |
| DOI | 10.1088/0256-307X/32/7/076101 |
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| Abstract | Modified novel high silicon steel （MNHS, a newly developed reduced-activation martensitic alloy） and commercial alloy Tgl are implanted with 200 keV He2＋ ions to a dose of 5 × 1020 ions/m2 at 300, 450 and 560~C. Transmission electron microscopy （TEM） is used to characterize the size and morphology of He bubbles. With the increase of the implantation temperature, TEM observations indicate that bubbles increase in size and the proportion of ＇brick shaped＇ cuboid bubbles increases while the proportion of polyhedral bubbles decreases in both the steel samples. For the samples implanted at the same temperature, the average size of He bubbles in MNHS is smaller than that in T91. This might be due to the abundance of boundaries and precipitates in MNHS, which provide additional sites for the trapping of He atoms, thus reduce the susceptibility of MNHS to He embrittlement. |
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| AbstractList | Modified novel high silicon steel （MNHS, a newly developed reduced-activation martensitic alloy） and commercial alloy Tgl are implanted with 200 keV He2＋ ions to a dose of 5 × 1020 ions/m2 at 300, 450 and 560~C. Transmission electron microscopy （TEM） is used to characterize the size and morphology of He bubbles. With the increase of the implantation temperature, TEM observations indicate that bubbles increase in size and the proportion of ＇brick shaped＇ cuboid bubbles increases while the proportion of polyhedral bubbles decreases in both the steel samples. For the samples implanted at the same temperature, the average size of He bubbles in MNHS is smaller than that in T91. This might be due to the abundance of boundaries and precipitates in MNHS, which provide additional sites for the trapping of He atoms, thus reduce the susceptibility of MNHS to He embrittlement. Modified novel high silicon steel (MNHS, a newly developed reduced-activation martensitic alloy) and commercial alloy T91 are implanted with 200 keV He super(2+) ions to a dose of 5-10 super(20) ions/m super(2) at 300, 450 and 550[degrees]C. Transmission electron microscopy (TEM) is used to characterize the size and morphology of He bubbles. With the increase of the implantation temperature, TEM observations indicate that bubbles increase in size and the proportion of 'brick shaped' cuboid bubbles increases while the proportion of polyhedral bubbles decreases in both the steel samples. For the samples implanted at the same temperature, the average size of He bubbles in MNHS is smaller than that in T91. This might be due to the abundance of boundaries and precipitates in MNHS, which provide additional sites for the trapping of He atoms, thus reduce the susceptibility of MNHS to He embrittlement. |
| Author | 王霁 高星 王志光 魏孔芳 姚存峰 崔明焕 孙建荣 李炳生 庞立龙 朱亚滨 骆鹏 常海龙 张宏鹏 朱卉平 王栋 杜洋洋 谢二庆 |
| AuthorAffiliation | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 University of Chinese Academy of Sciences, Beijing 100049 School of Physical Science and Technology, Lanzhou University, Lanzhou 730000 |
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| Cites_doi | 10.1016/S0022-3115(02)01082-6 10.1016/j.jnucmat.2012.12.039 10.1016/j.jnucmat.2012.11.049 10.1080/01418618308244330 10.1016/j.jnucmat.2003.09.001 10.1016/j.jnucmat.2007.03.002 10.1098/rspa.1981.0120 10.1016/0022-3115(75)90203-2 10.1088/1674-1056/18/6/057 10.7498/aps.62.039205 10.1016/j.jnucmat.2007.11.009 10.1146/annurev.matsci.38.060407.130315 10.1007/BF02647545 10.1080/14786435708243211 10.1016/j.jnucmat.2006.02.015 10.1111/j.1365-2818.1979.tb00189.x 10.1179/174892406X142714 10.1088/1674-1056/17/2/050 10.1016/j.jnucmat.2008.12.134 10.1016/S0022-3115(02)01043-7 10.1016/0022-3115(81)90554-7 |
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| DocumentTitleAlternate | TEM Characterization of Helium Bubbles in T91 and MNHS Steels Implanted with 200 keV He Ions at Different Temperatures |
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| Notes | 11-1959/O4 Modified novel high silicon steel （MNHS, a newly developed reduced-activation martensitic alloy） and commercial alloy Tgl are implanted with 200 keV He2＋ ions to a dose of 5 × 1020 ions/m2 at 300, 450 and 560~C. Transmission electron microscopy （TEM） is used to characterize the size and morphology of He bubbles. With the increase of the implantation temperature, TEM observations indicate that bubbles increase in size and the proportion of ＇brick shaped＇ cuboid bubbles increases while the proportion of polyhedral bubbles decreases in both the steel samples. For the samples implanted at the same temperature, the average size of He bubbles in MNHS is smaller than that in T91. This might be due to the abundance of boundaries and precipitates in MNHS, which provide additional sites for the trapping of He atoms, thus reduce the susceptibility of MNHS to He embrittlement. WANG Ji, GAO Xing, WANG Zhi-Guang, WEI Kong-Fang, YAO Cun-Feng, CUI Ming-Huan, SUN Jian-Rong, LI Bing-Sheng, PANG Li-Long, ZHU Ya-Bin, LUO Peng, CHANG Hai-Long, ZHANG Hong-Peng, ZHU Hui-Ping, WANG Dong, DU Yang-Yang, XIE Er-Qing（ 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000 2 University of Chinese Academy of Sciences, Beijing 100049 3School of Physical Science and Technology, Lanzhou University, Lanzhou 730000） ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
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| References | 23 24 25 26 27 Zheng H (3) 2014; 63 Chen L Q (18) 2008; 17 Li Y F (22) 2014; 31 Xie H X (17) 2013; 22 Zhao C W (14) 2009; 18 10 11 12 13 16 19 1 Jiang S N (21) 2013; 62 2 4 5 6 7 8 9 Li Y F (15) 2013; 30 20 |
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| Snippet | Modified novel high silicon steel （MNHS, a newly developed reduced-activation martensitic alloy） and commercial alloy Tgl are implanted with 200 keV He2＋... Modified novel high silicon steel (MNHS, a newly developed reduced-activation martensitic alloy) and commercial alloy T91 are implanted with 200 keV He... |
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| SubjectTerms | Alloy development Alloy steels Boundaries Bubbles Ferritic stainless steels Precipitates Silicon steels Steels T91钢 TEM表征 Transmission electron microscopy 原子俘获 氦泡 温度 电镜观测 离子 透射电子显微镜 |
| Title | TEM Characterization of Helium Bubbles in T91 and MNHS Steels Implanted with 200 keV He Ions at Different Temperatures |
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