Directional solidification of metal matrix composites

Details Directional solidification of metal matrix composites Directional solidification of metal matrix composites

1988-11-10

1991-06-04

Seidel, Richard K.

Metal founding

Process

Shaping liquid metal against a forming surface

1641221, B22D 1914

Patent

active

050205838

ABSTRACT:
A metal matrix composite is formed by contacting a molten matrix alloy with a permeable mass of filler material or preform in the presence of an infiltrating atmosphere. Under these conditions, the molten matrix alloy will spontaneously infiltrate the permeable mass of filler material or preform under normal atmospheric pressures. Once a desired amount of spontaneous infiltration has been achieved, or during the spontaneous infiltration step, the matrix metal which has infiltrated the permeable mass of filler material or preform is directionally solidified. This technique allows the production of spontaneously infiltrated metal matrix composites having improved microstructures and properties.

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