Metal matrix compositions and method of manufacture thereof

Details Metal matrix compositions and method of manufacture thereof Metal matrix compositions and method of manufacture thereof

1995-09-29

1997-03-18

Jordan, Charles T.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428548, 2802811, B22F 704

Patent

active

056131895

ABSTRACT:
An improved metal matrix composite which, in a preferred embodiment disclosed herein, utilizes boron carbide as the ceramic additive to a base material metal. The metal matrix composite of the present invention begins with the preparation of the boron carbide powder by particle size selection in a jet mill. The resulting powder and metal powder are then mixed by blending of powder of all the various elements such as by means of a conventional blender to uniformly mix powdered substances and avoid stratification and settling. After the particles have been sufficiently mixed, they are degassed and then placed into a die and then into a cylindrical container where the particulates are subjected to extremely high pressures transforming the elements into a solid ingot.

REFERENCES:
patent: 4626388 (1986-11-01), Jatkar et al.
Harrigan, "Metal Matrix Composite Applications," Mechanical Properties of Metallic Composites, Marcel Dekker, pp. 759-773 (abstract) Apr. 1994.
Harrigan, "Fatigue Testing Welded Joints for P/M Aluminum-Matrix Composites" JOM, pp. 52-53 (abstract) Jul. 1994.
Pickering, "Bicycle industry takes MMC for a ride," Met. Powder Rep. 50, (6), 30-33 (abstract) Jun. 1995.

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