Continuous fiber-reinforced titanium-based composite material and method of manufacturing the same
AssigneesNKK Corporation, Shinanogawa Technopolis Development Organization
InventorsMasaru Kobayashi, Seiichi Suzuki, Hiroshi Iizumi, Chiaki Ouchi
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Abstract
A continuous fiber-reinforced Ti-based composite material comprises a Ti alloy matrix containing 3 to 7% by weight of Al, 2 to 5% by weight of v, 1 to 3% by weight of Mo, 1 to 3% by weight of Fe, 0.06 to 0.20% by weight of 0, and the balance of Ti and unavoidable impurities, and SiC continuous fibers arranged within said matrix in one direction.
Claims16
A continuous fiber-reinforced Ti-based composite material, comprising a Ti alloy matrix containing 3 to 7% by weight of A1, 2 to 5% by weight of V, 1 to 3% by weight of Mo, 1 to 3% by weight of Fe, 0.06 to 0.20% by weight of O, and a balance of Ti and unavoidable impurities, and SiC continuous fibers arranged within said matrix in one direction, said composite material having a strength exceeding 90% of a theoretical value obtained by the rules of mixtures.
A method of manufacturing a continuous fiber-reinforced Ti-based composite material, comprising the steps of:
- alternately stacking one upon the other a Ti alloy thin plate containing 3 to 7% by weight of Al, 2 to 5% by weight of V, 1 to 3% by weight of Mo, 1 to 3% by weight of Fe, 0.06 to 0.20% by weight of O, and a balance of Ti and unavoidable impurities, and SiC continuous fibers arranged in one direction;
- and
- hot-pressing the resultant stacked structure under a vacuum of at most 10.sup.-1 Pa or an inert gas atmosphere, at a heating temperature of 700.degree. to 850.degree. C., under a pressure of at least 5 MPa, and with a pressurizing time of at most 10 hours.
Dependencies are inferred from the claim text.