Protium Absorption-Desorption Properties of Ti–V–Cr Alloys with a BCC Structure
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- Tominaga Yukio
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Nishimura Sinya
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Amemiya Toshikazu
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Fuda Takeshi
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Tamura Takuya
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Kuriiwa Takahiro
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Kamegawa Atsunori
- Department of Materials Science, Graduate School of Engineering, Tohoku University
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- Okada Masuo
- Department of Materials Science, Graduate School of Engineering, Tohoku University
書誌事項
- タイトル別名
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- Protium Absorption-Desorption Properties of Ti–V–Cr Alloys with a BCC Structure
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抄録
Vanadium-based BCC alloys are known to absorb a high amount of protium. But, they do not desorb absorbed-protium completely. This paper aims to clarify the effects of alloy composition and heat-treatment on the protium absorption-desorption properties of Ti-(0–35) at%V–Cr alloys.<BR>A Ti–35V–40Cr alloy was chosen as the starting composition. The plateau pressure of the Ti–35V–(40+x)Cr (x=−3, 0, 3) alloys increased with increasing Cr content. For the alloys containing more than 15 at%V, a BCC phase was formed in the as-cast state, which was found to have an effective protium capacity of about 2.4 mass%H. However, a Laves phase was formed for alloys containing less than 10 at%V, which only had an effective protium capacity of about 1.8 mass%H.<BR>The effect of heat-treatment on the microstructures and protium absorption-desorption properties of the Ti–35V–40Cr alloy were studied. It was found that the optimum condition for heat-treatment was annealing at 1573 K for 1 min. The Ti–35V–40Cr alloy heat-treated under this condition exhibited the highest effective protium capacity of 2.6 mass%H. This effective protium capacity is higher than any other reported values at 313 K. However, further annealing at 1573 K led to a decrease in protium capacity, which may result from an increase in the amount of a Ti-rich phase. A Ti–10V–55.4Cr alloy, which contained a Laves phase in the as-cast state, became single-phase BCC after heat-treatment. Even though the alloy contains only 10 at%V, this heat-treated alloy showed an effective protium capacity of 2.5 mass%H, which is higher than any other reported values for BCC alloys.
収録刊行物
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- Materials Transactions, JIM
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Materials Transactions, JIM 40 (9), 871-874, 1999
社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001204246035072
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- NII論文ID
- 130003422630
- 10005356227
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- NII書誌ID
- AA10699969
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- COI
- 1:CAS:528:DyaK1MXnt12hs7o%3D
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- ISSN
- 2432471X
- 09161821
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- NDL書誌ID
- 4859217
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可