| Project/Area Number |
08455306
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | University of Tokyo |
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Principal Investigator |
KAGAWA Yutaka The University of Tokyo, Institute of Industrial Science, Associate Professor, 生産技術研究所, 助教授 (50152591)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥7,400,000 (Direct Cost: ¥7,400,000)
Fiscal Year 1997: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1996: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | SiC fiber-reinforced Ti alloy / Ti-15-3 matrix / Interphase / Metal coating / Fatigue property / Interface mechanical properties / SCS coating / Interface debonding / SiC繊維強化Ti / Ti-15-3合金 / プッシュアウト法 / 疲労試験 / 破壊機構 / 特性予測 |
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| Research Abstract |
To improve fatigue resistance of SiC fiber-reinforced Ti-15-3 alloy composite, anew interphase layr has been proposed. Duplex metal coatings, Cu/Mo and Cu/W,were deposited on SiC (SCS-6) fiber by PVD process. The fibers were incorporated into Ti-15-3 alloy matrix by HIP process. Fatigue resistance of the un-notched composite and effect of the duplex metal coating on interface mechanical properties were studied. It was found that the duplex metal coatings improved fatigue resistance compared with original SiC fiber-reinforced Ti-15-3 composite. The improvement was achieved by preventing the debonding of SCS coating layr from the SiC fiber by the incorporation of duplex metal coating. Effectiveness of duplex metal interphase layr on the improvement of fatigue resistance in SiC fiber-reinforced Ti-15-3 composite was proved from the experimental evidences.
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