2014 Fiscal Year Final Research Report
Improvements of properties of Cu-based alloys by aging in hydrogen atmosphere in being associated with new precipitation mode
| Project/Area Number |
23246123
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Material processing/treatments
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| Research Institution | Tohoku University |
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Principal Investigator |
OKADA Masuo 東北大学, 工学(系)研究科(研究院), 名誉教授 (80133049)
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| Co-Investigator(Kenkyū-buntansha) |
KAMEGAWA Atsunori 東北大学, 大学院工学研究科, 准教授 (90292242)
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| Research Collaborator |
KURIIWA Takahiro
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| Project Period (FY) |
2011-04-01 – 2015-03-31
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| Keywords | 水素 / Cu-Ti合金 / Cu-Cr-Zr合金 / Cu-Cr-Zr-Ti合金 / スピノーダル分解 / 水素中時効熱処理 / 水素有効機能 |
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| Outline of Final Research Achievements |
Effects of hydrogen heat-treatment on mechanical and electrical properties of commercialized copper-based alloy were investigated.
Optimum composition of Cu-Ti alloy for strength enhancement by hydrogen heat-treatment was Cu-3mass%Ti. It was found that hydrogenation followed by heat-treatment in vacuum was effective to enhance the workability of the alloys and its electrical conductivity.
The addition of Ti into Cu-Cr-Zr alloys heat-treated in hydrogen was effective to improve their tensile strength. The tensile strength and electrical conductivity of the Cu-0.2Cr-0.6Zr-0.5Ti alloy after hydrogen heat-treatment at 400C for 5h were 665MPa and 56%IACS, respectively.
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| Free Research Field |
材料工学
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