Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions
This work reports on the evolution law of helium bubbles in Hastelloy N alloy on post-irradiation annealing conditions. After helium ion irradiation at room temperature and subsequent annealing at 600 °C (1 h), the transmission electron microscopy (TEM) micrograph indicates the presence of helium bu...
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| Format: | Article |
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MDPI AG
2016-10-01
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| Series: | Materials |
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| Online Access: | http://www.mdpi.com/1996-1944/9/10/832 |
| _version_ | 1811323136783679488 |
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| author | Jie Gao Liangman Bao Hefei Huang Yan Li Jianrong Zeng Zhe Liu Renduo Liu Liqun Shi |
| author_facet | Jie Gao Liangman Bao Hefei Huang Yan Li Jianrong Zeng Zhe Liu Renduo Liu Liqun Shi |
| author_sort | Jie Gao |
| collection | DOAJ |
| description | This work reports on the evolution law of helium bubbles in Hastelloy N alloy on post-irradiation annealing conditions. After helium ion irradiation at room temperature and subsequent annealing at 600 °C (1 h), the transmission electron microscopy (TEM) micrograph indicates the presence of helium bubbles with size of 2 nm in the depth range of 0–300 nm. As for the sample further annealed at 850 °C (5 h), on one hand, a “Denuded Zone” (0–38 nm) with rare helium bubbles forms due to the decreased helium concentration. On the other hand, the “Ripening Zone” (38–108 nm) and “Coalescence Zone” (108–350 nm) with huge differences in size and separation of helium bubbles, caused by different coarsening rates, are observed. The mechanisms of “Ostwald ripening” and “migration and coalescence”, experimentally proved in this work, may explain these observations. |
| first_indexed | 2024-04-13T13:48:43Z |
| format | Article |
| id | doaj.art-3e1603b691584e76af40a8bf0bd5b09c |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-04-13T13:48:43Z |
| publishDate | 2016-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-3e1603b691584e76af40a8bf0bd5b09c2022-12-22T02:44:24ZengMDPI AGMaterials1996-19442016-10-0191083210.3390/ma9100832ma9100832Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing ConditionsJie Gao0Liangman Bao1Hefei Huang2Yan Li3Jianrong Zeng4Zhe Liu5Renduo Liu6Liqun Shi7Shanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaShanghai Institute of Applied Physics, Chinese Academy of Science (CAS), Shanghai 201800, ChinaInstitute of Modern Physics, Fudan University, Shanghai 200433, ChinaThis work reports on the evolution law of helium bubbles in Hastelloy N alloy on post-irradiation annealing conditions. After helium ion irradiation at room temperature and subsequent annealing at 600 °C (1 h), the transmission electron microscopy (TEM) micrograph indicates the presence of helium bubbles with size of 2 nm in the depth range of 0–300 nm. As for the sample further annealed at 850 °C (5 h), on one hand, a “Denuded Zone” (0–38 nm) with rare helium bubbles forms due to the decreased helium concentration. On the other hand, the “Ripening Zone” (38–108 nm) and “Coalescence Zone” (108–350 nm) with huge differences in size and separation of helium bubbles, caused by different coarsening rates, are observed. The mechanisms of “Ostwald ripening” and “migration and coalescence”, experimentally proved in this work, may explain these observations.http://www.mdpi.com/1996-1944/9/10/832nuclear materialsradiation damagehelium bubbledenuded zoneOstwald ripeningmigration and coalescence |
| spellingShingle | Jie Gao Liangman Bao Hefei Huang Yan Li Jianrong Zeng Zhe Liu Renduo Liu Liqun Shi Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions Materials nuclear materials radiation damage helium bubble denuded zone Ostwald ripening migration and coalescence |
| title | Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions |
| title_full | Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions |
| title_fullStr | Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions |
| title_full_unstemmed | Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions |
| title_short | Evolution Law of Helium Bubbles in Hastelloy N Alloy on Post-Irradiation Annealing Conditions |
| title_sort | evolution law of helium bubbles in hastelloy n alloy on post irradiation annealing conditions |
| topic | nuclear materials radiation damage helium bubble denuded zone Ostwald ripening migration and coalescence |
| url | http://www.mdpi.com/1996-1944/9/10/832 |
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