| Project/Area Number |
63044107
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| Research Category |
Grant-in-Aid for Overseas Scientific Survey.
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Kyushu University |
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Principal Investigator |
GOTO Shoji Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Associate Professor, 総合理工学研究科, 助教授 (50005948)
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| Co-Investigator(Kenkyū-buntansha) |
P.N. Quested 英国, 国立物理学研究所, 研究員
M. Mclean 英国, 国立物理学研究所, 主任研究員
NAKASHIMA Hideharu Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Re, 総合理工学研究科, 助手 (80180280)
QUESTED P.N. National Physical Laboratory, United Kingdom, Researcher
MCLEAN M. National Physical Laboratory, United Kingdom, Head Researcher
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| Project Period (FY) |
1988 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥5,000,000 (Direct Cost: ¥5,000,000)
Fiscal Year 1989: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 1988: ¥2,500,000 (Direct Cost: ¥2,500,000)
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| Keywords | Metal Matrix Composite / Creep / Interface / Aspect Ratio / Rule of Mixtures / High Temperature |
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| Research Abstract |
The deformation mechanisms that can occur in advanced metal matrix composites, such as eutectic composites, consisting of phases with quite different melting points and deformation characteristics are studied. The implications of different deformation modes in the fibers and matrix for the creep behaviour of the composite are considered with particular reference to the microstructural characteristids of the composite. A model describing the time-dependent deformation of a composite consisting of elastic fibers entrained in a metal matrix deforming by power-law creep is developed. The theory uses the formalism of continuum damage mechanics to account for the end effects associated with short fibers and the effects of interfaces with rheological behaviours that differ from either fiber or matrix. The model identifies the important microstructural and property characteristics of the constituent phases that can significantly influence the creep behaviour. The model defines a interface factor B which indicates the effectiveness of stress transfer between matrix and fiber. The important parameters in determining creep performance are B, fiber aspect ratio and fiber volume fraction.
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