| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2024-09-02 |
| タイトル |
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タイトル |
Modification of Hardness and Electrical Conductivity of Copper-Titanium Alloy by Energetic Electron Irradiation |
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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 |
Akihiro Iwase
Yuki Fujimura
Satoshi Semboshi
Saito Yuuichi
Fuminobu Hori
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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 |
We performed 1.5 MeV electron-irradiation at 333 K and 533 K for Cu-4.2 at. % Ti alloy with a single phase of super-saturated solid solution, and investigated the irradiation-induced changes in Vickers hardness and electrical conductivity. With increasing the electron fluence, both of the hardness and the electrical conductivity increase. Such phenomena can be explained as due to the formation of Ti-rich precipitates which are caused by irradiation-enhanced diffusion of Ti atoms. The increase in electrical conductivity is caused by the reduction of Ti content in Cu matrix due to the formation of Ti-rich precipitates. The increase in hardness is also caused by Ti-rich precipitates which act as effective obstacles against the motions of dislocations. We found a clear correlation between the irradiation-induced change in the hardness, ΔHv and change in electrical resistivity, Δρ, or that in electrical conductivity, Δσ, as ΔHv∝√(-Δρ), or ΔHv∝√(Δσ/σ), irrespective of irradiation temperatures. This correlation suggests that the precipitate-cutting mechanism governs the irradiation-induced increase in hardness; that is, 1.5 MeV electron-irradiation at relatively low temperatures of 333 K to 533 K should promote the nucleation of fine Ti-rich precipitates preferentially rather than the growth of them. The present result shows that energetic electron irradiation is a good tool to improve the mechanical and electrical properties of Cu-Ti alloys as electrical components. |
| 書誌情報 |
Materials Transactions
巻 64,
号 9,
p. 2232-2236,
発行日 2023-08
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| 出版者 |
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出版者 |
一般社団法人日本溶射学会 |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
1345-9678 |
| DOI |
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識別子タイプ |
DOI |
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関連識別子 |
10.2320/matertrans.MT-M2023061 |
