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Neutron irradiation-enhanced grain growth in tungsten and tungsten alloys
https://repo.qst.go.jp/records/84518
https://repo.qst.go.jp/records/84518aa08313e-62cb-48c5-96c1-dfae3126a219
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2022-01-07 | |||||
| タイトル | ||||||
| タイトル | Neutron irradiation-enhanced grain growth in tungsten and tungsten alloys | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Gietl, Hanns
× Gietl, Hanns× Koyanagi, Takaaki× Hu, Xunxiang× Fukuda, Makoto× Hasegawa, Akira× Katoh, Yutai× Makoto, Fukuda |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | To understand the microstructural stability of candidate plasma-facing materials under fusion-relevant environments, neutron irradiation of W and W-3%Re alloys with and without K and La dopants was per formed in the mixed-spectrum High Flux Isotope Reactor at nominal temperatures of ~850 °C and ~1100 °C to calculated doses between 0.42 and 0.47 dpa. To the best of our knowledge, this study presents the first experimental evidence of radiation-enhanced recrystallization in W and undoped W–Re alloys at ~850 °C, conditions where thermal annealing does not cause any grain growth in a similar timescale. Potassium- or lanthanum-doped tungsten alloys showed more resistance to radiation-enhanced grain growth. We explain the acceleration of grain growth by analyzing the self-diffusion constant under atomic displacement environments. The microstructural observations of the studied W variants suggest that La doping is more effective than K doping for mitigating recrystallization. This study also found that radiation-enhanced crystallization is an important consideration when designing and applying W to plasma-facing components in future nuclear fusion reactors. | |||||
| 書誌情報 |
Journal of Alloys and Compounds 巻 901, p. 163419, 発行日 2021-12 |
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| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0925-8388 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1016/j.jallcom.2021.163419 | |||||
| 関連サイト | ||||||
| 識別子タイプ | URI | |||||
| 関連識別子 | https://www.sciencedirect.com/science/article/abs/pii/S0925838821048295?via%3Dihub | |||||
