Reinforced aluminum alloy composite

B - Operations – Transporting – 22 – D

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22/175, 261/37,

B22D 19/02 (2006.01) C22C 49/06 (2006.01)

Patent

CA 1055733

ABSTRACT OF THE DISCLOSURE A composite reinforced with polycrystalline alumina fibers in a matrix of an aluminum alloy containing 0.5-5.5% by weight of the matrix of lithium is prepared by infiltrating alumina fibers with a molten alloy containing aluminum and 1-8% by weight of lithium for a time sufficient to form a reaction sheath on the fibers of a thickness less than about 15% of the total fiber diameter. Composites of the invention are useful as structural members in applications that require strong, stiff and light- weight members, such as in aircrafts and missiles, as well as in high temperatures applications such as aircraft engines and turbines.

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