Microstructurally toughened metal matrix composite article and m

Details Microstructurally toughened metal matrix composite article and m Microstructurally toughened metal matrix composite article and m

1988-02-05

1989-02-28

Lechert, Jr., Stephen J.

Stock material or miscellaneous articles

All metal or with adjacent metals

Intermediate article

419 48, 419 8, B22F 300

Patent

active

048084859

ABSTRACT:
A microstructurally toughened ceramic-particle-reinforced metal-matrix composite article is disclosed. The article includes discrete regions of ceramic-particulate-reinforced metal matrix which enclosed within and separated from each other by a network of unreinforced metal. The article exhibits high tensile strength, high elastic modulus and high impact resistance. A process for making the article is also disclosed. The process includes positioning structural elements within a metallic container to define a plurality of discrete void spaces within the container, introducing a quantity of metallic particles or of a particulate mixture of metallic particles and ceramic particles into the void spaces, and consolidating the container, structural elements and particles to form the microstructurally toughened composite article.

REFERENCES:
patent: 3803702 (1974-04-01), Bratt
patent: 4025313 (1977-05-01), Slaats
patent: 4721598 (1988-01-01), Lee
D. W. Kum, T. Oyama, J. Wadsworth and O. D. Sherby, The Impact Properties of Laminated Composites Containing Ultrahigh Carbon (UHC) Steels, J. Mech. Phys., vol. 31, No. 2, pp. 173-186, 1983.

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