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  1. 原著論文

Effects of helium on irradiation response of reduced-activation ferritic-martensitic steels: Using nickel isotopes to simulate fusion neutron response

https://repo.qst.go.jp/records/82635
https://repo.qst.go.jp/records/82635
8c9f4af7-3b08-4f8f-8180-badf351c748a
Item type 学術雑誌論文 / Journal Article(1)
公開日 2021-04-06
タイトル
タイトル Effects of helium on irradiation response of reduced-activation ferritic-martensitic steels: Using nickel isotopes to simulate fusion neutron response
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 Kim, B.K.

× Kim, B.K.

WEKO 1013256

Kim, B.K.

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Tan, L.

× Tan, L.

WEKO 1013257

Tan, L.

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Sakasegawa, H.

× Sakasegawa, H.

WEKO 1013258

Sakasegawa, H.

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Parish, C.M.

× Parish, C.M.

WEKO 1013259

Parish, C.M.

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Zhong, W.

× Zhong, W.

WEKO 1013260

Zhong, W.

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Hiroyasu, Tanigawa

× Hiroyasu, Tanigawa

WEKO 1013261

Hiroyasu, Tanigawa

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Katoh, Y.

× Katoh, Y.

WEKO 1013262

Katoh, Y.

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Hiroyasu, Tanigawa

× Hiroyasu, Tanigawa

WEKO 1013263

en Hiroyasu, Tanigawa

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抄録
内容記述タイプ Abstract
内容記述 Understanding the effects of helium on microstructures and mechanical properties of reduced-activation ferritic-martensitic steels is important to use of these steels in fusion reactor structures. The 9Cr-2WVTa steels were doped with 58Ni and 60Ni isotopes at 2 weight percent to control the rate of transmutation helium generation. The samples were irradiated in the High Flux Isotope Reactor to ~24 displacements per atom at nominal temperatures of 300, 400, and 500°C, producing 228 and 7 atomic parts-per-million helium in the 58Ni- and 60Ni-doped samples, respectively. Transmission electron microscopy revealed a variety of precipitates and the radiation-induced dislocation loops and cavities (voids or helium bubbles). Tensile tests of the irradiated samples at the irradiation temperatures showed radiation-induced hardening at 300°C and radiation-induced softening at 400°C. Analysis indicates that the hardening primarily originated from the loops and cavities. The 58Ni-doped samples had greater strengthening contributions from loops and cavities, leading to higher hardening with lower ductility than the 60Ni-doped samples. The greater helium production of 58Ni did not show pronounced reductions in ductility of the samples.
書誌情報 Journal of Nuclear Materials

巻 545, p. 152634, 発行日 2021-03
出版者
出版者 Elsevier
ISSN
収録物識別子タイプ ISSN
収録物識別子 0022-3115
DOI
識別子タイプ DOI
関連識別子 10.1016/j.jnucmat.2020.152634
関連サイト
識別子タイプ URI
関連識別子 https://www.sciencedirect.com/science/article/pii/S0022311520312423#!
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