A Challenge to Development of Functionally-graded Long-life Divertor based on Degradation Behavior Caused by Thermal Fatigue of Tungsten
| Project/Area Number |
26289351
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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 | Tohoku University |
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Principal Investigator |
Nogami Shuhei 東北大学, 工学研究科, 准教授 (00431528)
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| Co-Investigator(Kenkyū-buntansha) |
江原 真司 東北大学, 工学研究科, 准教授 (30325485)
福田 誠 東北大学, 工学(系)研究科(研究院), 助教 (70757666)
涌井 崇志 東北大学, サイクロトロン・ラジオアイソトープセンター, 助教 (70359644)
藪内 聖皓 東北大学, 工学(系)研究科(研究院), 助教 (70633460)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2016: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2015: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000)
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| Keywords | 核融合炉 / ダイバータ / タングステン / 強度 / 疲労 / 寿命 / 固相拡散接合 / 傾斜機能 / 熱疲労 / 引張強さ / 疲労寿命 / 再結晶 / 延性 / 再結晶温度 |
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| Outline of Final Research Achievements |
The objective of this research is development of functionally-graded tungsten (W) for divertor using a void dispersion strengthened W (VDSW) and a nano structure controlled W (NSCW). Based on the fundamental mechanical properties, recrystallization behavior, fatigue properties, and resistance to the beam bombardment, development of the VDSW and NSCW was carried out and the excellent performance was shown by these materials. Development of a new testing machine for evaluating the fatigue properties was also carried out and the available data of these materials were obtained. In contrast, the evaluation of resistance to helium implantation was carried out under the only limited evaluation conditions. This is one of the issues to be improved by future works. However, the development of fabrication technology of reasonable joints using VDSW and NSCW was all but almost over. Therefore, the objective of this research is considered to be basically achieved.
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Report
(5 results)
Research Products
(37 results)
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[Presentation] タングステン合金の疲労寿命2016
Author(s)
野上修平, 管文海, 福田誠, 長谷川晃
Organizer
第11回核融合エネルギー連合講演会
Place of Presentation
九州大学、福岡県福岡市
Year and Date
2016-07-14
Related Report
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[Presentation] Advances in Fatigue Test Technology2015
Author(s)
S. Nogami1, W. H. Guan, M. Fukuda, A. Hasegawa, D. Kawai, T. Iwata, R. Nakai, K. Yamamoto, Y. Sato, M. Yamazaki, T. Nozawa
Organizer
17th International Conference on Fusion Reactor Materials
Place of Presentation
Eurogress Aachen, Aachen, Germany
Year and Date
2015-10-12
Related Report
Int'l Joint Research / Invited
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