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Evaluation of irradiation hardening of ion-irradiated V–4Cr–4Ti and V–4Cr–4Ti–0.15Y alloys by nanoindentation techniques
http://hdl.handle.net/10655/00013143
http://hdl.handle.net/10655/000131431ca497d9-b79c-4bd2-adfa-1ee973256ce9
名前 / ファイル | ライセンス | アクション |
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repository_13409_paper (1.1 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-05-13 | |||||
タイトル | ||||||
タイトル | Evaluation of irradiation hardening of ion-irradiated V–4Cr–4Ti and V–4Cr–4Ti–0.15Y alloys by nanoindentation techniques | |||||
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 | |||||
著者 |
MIYAZAWA, Takeshi
× MIYAZAWA, Takeshi× NAGASAKA, Takuya× KASADA, Ryuta× HISHINUMA, Yoshimitsu× MUROGA, Takeo× WATANABE, Hideo× YAMAMOTO, Takuya× NOGAMI, Shuhei× HATAKEYAMA, Masahiko |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0001-6564-8922 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Irradiation hardening behavior of V–4Cr–4Ti and V–4Cr–4Ti–0.15Y alloys after Cu-ion beam irradiation were investigated with a combination between nanoindentation techniques and finite element method (FEM) analysis. The ion-irradiation experiments were conducted at 473 K with 2.4 MeV Cu2+ ions up to 7.6 dpa. For the unirradiated materials, the increase in nanoindentation hardness with decreasing indentation depth, so-called indentation size effect (ISE), was clearly observed. After irradiation, irradiation hardening in the measured depth was identified. Hardening behavior of bulk-equivalent hardness for V–4Cr–4Ti–0.15Y alloy was similar to that for V–4Cr–4Ti alloy. Y addition has little effect on irradiation hardening at 473 K. Adding the concept of geometrically necessary dislocations (GNDs) to constitutive equation of V–4Cr–4Ti alloy, the ISE was simulated. A constant value of α = 0.5 was derived as an optimal value to simulate nanoindentation test for ion-irradiated V–4Cr–4Ti alloy. Adding the term of irradiation hardening Δσirrad. to constitutive equation with α = 0.5, FEM analyses for irradiated surface of V–4Cr–4Ti alloy were carried out. The analytic data of FEM analyses based on neutron-irradiation hardening equivalent to 3.0 dpa agreed with the experimental data to 0.76 dpa. The comparison indicates that irradiation hardening by heavy ion-irradiation is larger than that by neutron-irradiation at the same displacement damage level. Possible mechanisms for extra hardening by heavy ion-irradiation are the processes that the injected Cu ions could effectively produce irradiation defects such as interstitials compared with neutrons, and that higher damage rate of ion-irradiation enhanced nucleation of irradiation defects and hence increased the number density of the defects compared with neutron-irradiation. | |||||
書誌情報 |
Journal of Nuclear Materials 巻 455, 号 1-3,December 2014, p. 440-444, 発行日 2014-08 |
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出版者 | ||||||
出版者 | Elsevier | |||||
出版者 | ||||||
出版者 | North-Holland | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 00223115 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11533702 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.jnucmat.2014.07.059 | |||||
権利 | ||||||
権利情報 | © 2014 Elsevier B.V. All rights reserved. | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.jnucmat.2014.07.059 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
NAIS | ||||||
13409 |