FIBROUS COMPOSITE MATERIAL Russian patent published in 2017 - IPC C22C49/06 C22C49/14 

FIELD: metallurgy.

SUBSTANCE: invention relates to fibrous composite materials reinforced with continuous and discrete fibers of aluminium oxide, intended for use as a structural material to produce articles such as gas turbine engine fan case, and can be used inaircraft engineering. The fibrous aluminium-based composite material consists of metal matrix from aluminium-based alloy containing magnesium, and continuous fibers of aluminium oxide α-Al₂O₃ with coating comprising discrete fibers of mullite 3Al₂O₃⋅2SiO₂. The coating additionally comprises discrete fibers α-Al₂O₃ with size of 150-200 microns with the following component ratio in the composite material, vol. %: discrete fibers of mullite 3Al₂O₃⋅2SiO₂ - 2-7, discrete fibers α-Al₂O₃ - 10-15, continuous fibers α-Al₂O₃ - 30-40, the matrix of aluminium-based alloy - the rest.

EFFECT: improved strength properties of the composite material, particularly the flexural strength and the compression strength due to the isotropy of the material.

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