Modeling Swelling Resistance in Reduced Activation ODS Steels based on Quantitative Structure Evaluations
| Project/Area Number |
25289338
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Nuclear fusion studies
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| Research Institution | Kyoto University |
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Principal Investigator |
Kimura Akihiko 京都大学, エネルギー理工学研究所, 教授 (90195355)
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| Co-Investigator(Kenkyū-buntansha) |
IWATA Noriyuki 京都大学, エネルギー理工学研究所, 特定助教 (40397534)
OMURA Takamasa 京都大学, エネルギー理工学研究所, 技術職員 (30506861)
HASHITOMI Okinobu 京都大学, エネルギー理工学研究所, 技術職員 (80506858)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2013: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | ODS鋼 / 耐照射性 / ナノ粒子構造解析 / イオン照射硬化 / 再結晶化 / 結晶粒度依存性 |
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| Outline of Final Research Achievements |
The effect of recrystallization annealing on the irradiation hardening of Al-added and Al-free ODS steels under the different irradiation conditions.
In Al-free ODS steel, fine grains and oxide particles are remained after annealing at 1400℃, while in Al-added ODS steel, recrystallization occurred and oxide particles are larger after annealing at 1350℃. After the irradiation at 300℃ to 10dpa, irradiation hardening of Al-added ODS steel is larger than that of Al-free ODS steel. The effect of annealing on the irradiation hardening is not significant. According to the Nix-Gao analysis result, the effect of cold rolling after annealing appears to reduce the irradiation hardening. After irradiation at 470℃ to 30dpa, irradiation hardening is observed in the ODS steel, which is a contrast to that conventional steels show no hardening after irradiation at temperatures above 425℃. Recrystallization annealing causes enhancement of swelling.
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Report
(4 results)
Research Products
(20 results)
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[Presentation] ODS Steels：Recent Progress and Justification for Significant In-vessel Applications2015
Author(s)
A. Kimura, W.T. Han, H.I. Je, Y.S. Ha, R. Kasada, K. Yabuuchi, T. Takayama, D.S. Chen, , S. Ukai, A. Hasegawa, G.R. Odette, T. Yamamoto, T.S. Byun, D.T. Hoelzer, S.A. Maloy, F.A. Garner, A. Moeslang, Y. de Carlan, R. Sergey, T.K. Kim, S.H. Noh
Organizer
17th International Conference on Fusion Reactor Materials (ICFRM-17)
Place of Presentation
Eurogress Aachen, Germany
Year and Date
2015-10-13
Related Report
Int'l Joint Research / Invited
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