Method for making internal shapes in a metal matrix composite bo

Details Method for making internal shapes in a metal matrix composite bo Method for making internal shapes in a metal matrix composite bo

1993-06-09

1994-11-08

Bradley, P. Austin

Metal founding

Process

Shaping liquid metal against a forming surface

164132, 164 671, B22D 1914

Patent

active

053618246

ABSTRACT:
The present invention relates to a novel process for forming internal shapes in metal matrix composite bodies. Particularly, an infiltration enhancer and/or an infiltration enhancer precursor and/or an infiltrating atmosphere are in communication with a filler material or a preform, at least at some point during the process, which permits molten matrix metal to spontaneously infiltrate the filler material or preform. Additionally, the filler material or preform may contain a mandrel which is capable of surviving the infiltration process, said mandrel being removed after infiltration has occurred. Such spontaneous infiltration occurs without the requirement for the application of any pressure or vacuum.

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