Composite material including matrix metal and closed loop config

Details Composite material including matrix metal and closed loop config Composite material including matrix metal and closed loop config

1987-04-15

1989-02-14

Zimmerman, John J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having magnetic properties, or preformed fiber orientation...

428614, C22C 109

Patent

active

048045861

ABSTRACT:
In a method for making a carbon fiber reinforced material, a mass of carbon fibers, disposed in a closed loop configuration, and initially having a Young's modulus which is between about 23 ton/mm.sup.2 (23,000 kg/mm.sup.2) and about 35 ton/mm.sup.2 (35,000 kg/mm.sup.2), is embedded within a mass of matrix metal by a process which involves the mass of matrix metal being heated at least to its melting point. A composite material made by such a method is also disclosed. Preferably, the carbon fibers, before being thus embedded in the mass of matrix metal, should have a Young's modulus which is between about 23 ton/mm.sup.2 and about 30 ton/mm.sup.2. By the Young's modulus of the carbon fibers thus being relatively moderate, the occurrence of faults such as cracks and fissures in the resulting composite material is obviated, and the resulting composite material has good strength and other characteristics.

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Levitt et al., Fabrication and Properties of Graphite Fiber Reinforced Magnesium, Metallurgical Transactions, vol. 3, Sep. 1972, pp. 2455-2459.
Kreider, K. G., Metallic Matrix Composites, Academic Press, NY, 1974, pp. 27, 322-329, 335-337.

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