Casting method for metal matrix composite castings

Details Casting method for metal matrix composite castings Casting method for metal matrix composite castings

1993-11-19

1995-03-07

Bradley, P. Austin

Metal founding

Process

Shaping liquid metal against a forming surface

164 97, 164 34, B22D 1914

Patent

active

053949307

ABSTRACT:
The invention discloses an improved method for forming metal matrix composite castings. The method achieves the casting having increased mechanical properties by using a selectively permeable mold in conjunction with pressurized gas. This allows a greater degree of metal infiltration within the interstices of a suspended preform. The method teaches the use of whiskered, fibered and particulated ceramic constituents for use in the preform, as well as various embodiments of casting methods.

REFERENCES:
patent: 3547180 (1970-12-01), Cochran et al.
patent: 3695337 (1972-10-01), Grand
patent: 4476916 (1984-10-01), Nusbaum
patent: 4770697 (1988-09-01), Zurecki
patent: 4828008 (1989-05-01), White et al.
patent: 4889177 (1989-12-01), Charbonnier
patent: 5010945 (1991-04-01), Burke
PCT International Publication No. WO 83/02782-International Publication Date: Aug. 18, 1983.

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