Continuous fiber-reinforced titanium-based composite material and preparation method thereof

Abstract

The invention provides a continuous fiber-reinforced titanium-based composite material and a preparation method thereof. The preparation method of the composite material comprises the following steps: taking aluminum or aluminum alloy, and titanium or titanium alloy as target materials, taking continuous SiC fibers as a reinforcement body, performing magnetron sputtering to manufacture titanium-titanium aluminum composite hybrid precursor fibers depositing titanium aluminum mixing coatings and titanium or titanium alloy coatings on the continuous SiC fibers; winding and paving the precursor fibers, and placing the precursor fibers in a titanium alloy matrix structure, performing the hot pressing or the hot isostatic pressure compositing to obtain the continuous fiber-reinforced titanium-based composite material. The invention also provides the continuous fiber-reinforced titanium-based composite material prepared by the preparation method provided by the invention. The continuous fiber-reinforced titanium-based composite material based on the titanium-titanium aluminum composite hybrid precursor fibers can integrate the advantages of titanium alloy and a titanium aluminum intermetallic compound, and has higher specific strength and specific stiffness, higher high temperature resistance, creepage resistance, oxidation resistance and corrosion resistance, and lower manufacturing cost.

Description

technical field [0001] The invention relates to a continuous fiber reinforced titanium-based composite material and a preparation method thereof, belonging to the technical field of metal composite materials. Background technique [0002] With the continuous improvement of the thrust-to-weight ratio of aero-engines, higher and higher requirements are put forward for the structural materials of the engines, especially for aero-engines with a thrust-to-weight ratio greater than 12, the structural materials are required to have higher specific strength, specific stiffness, and more excellent Excellent high temperature performance (high temperature strength, creep resistance), higher oxidation resistance and corrosion resistance. The existing nickel-based superalloys are close to their limit service temperature, and the density is too high, which can no longer meet the requirements of high thrust-to-weight ratio engines for structural materials. Continuous SiC fiber-reinforced ...

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Problems solved by technology

[0006] Compared with the continuous SiC fiber-reinforced titanium matrix composite prepared by SiC precursor wire coated with a single titanium-aluminum intermetallic compound, the continuous SiC fiber-reinforced titanium composite prepared by a single titanium alloy-coated SiC precursor wire is more resistant to high temperature and Creep ability is obviously insufficient, but due to the intrinsic brittleness of titanium-aluminum intermetallic compounds, continuous SiC fiber-reinforced titanium matrix composites prepared from SiC precursor wires coated with a single titanium-aluminum intermetallic compound have excellent crack growth resistance, etc. There are deficiencies, and its preparation temperature is also high

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