| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-03-14 |
| タイトル |
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タイトル |
Size dependence of micro-scale mechanical properties on heavy-ion irradiated tempered-martensitic steel evaluated through nanoindentation and micropillar compression tests |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Geng Diancheng
Yu Hao
Ando Masami
Tanigawa Hiroyasu
Kurotaki Hironori
Nozawa Takashi
Kondo Sosuke
Kasada Ryuta
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The size dependence of microscale mechanical properties is crucial for evaluating irradiation hardening using nanoindentation and micropillar compression tests. To predict bulk hardness without the indentation size effect in heavy-ion irradiated materials, this study designed a modified Nix?Gao model incorporating the effect of irradiation hardening. The bulk hardness of unirradiated F82H predicted from the nanoindentation hardness was consistent with the traditional Vickers hardness obtained using a multiscale hardness relationship. The effects of irradiation conditions and the irradiation damage gradient were also determined by the modified model. In a micropillar compression test performed using micropillars with sizes of 1?8 μm, the flow stress at 8 % plastic strain of the micropillars showed a stable and comparable value with that of a bulk tensile specimen. The irradiation hardening calculated using the bulk hardness obtained in the nanoindentation tests and the flow stress determined from the micropillar compression tests at 8 % plastic strain were consistent, as predicted by Tabor's law. These findings prove that the proposed method is effective for assessing the mechanical characteristics of a size-limited region, even on the subsurface of metallic materials exposed to heavy-ion irradiation. |
| 書誌情報 |
Journal of Nuclear Materials
巻 593,
p. 155013,
発行日 2024-03
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| 出版者 |
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出版者 |
Elsevier B.V. |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.1016/j.jnucmat.2024.155013 |
