Method of forming a metal matrix composite through the use of a

Details Method of forming a metal matrix composite through the use of a Method of forming a metal matrix composite through the use of a

1990-05-09

1992-06-09

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

164100, B22D 1902

Patent

active

051198649

ABSTRACT:
The present invention relates to the use of a gating means in combination with a spontaneous infiltration process to produce a metal matrix composite body. Particularly, a permeable mass of filler material or a preform is spontaneously infiltrated by molten matrix metal to form a metal matrix composite body. A gating means is provided which controls or limits the areal contact between molten matrix metal and the filler material or preform. The use of a gating means provides for control of the amount of matrix metal which can contact the preform or filler material, which may result in less machining of a formed metal composite body compared with a similar metal matrix composite body made without a gating mean. Moreover, the use of a gating means ameliorates the tendency of a formed metal matrix composite body to warp due to the contact between the formed composite body and matrix metal carcass.

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