Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1992-11-23
1994-04-19
Bradley, Paula A.
Metal founding
Process
Shaping liquid metal against a forming surface
164101, B22D 1914
Patent
active
053037634
ABSTRACT:
A metal matrix composite is formed by contacting a molten matrix metal with a permeable mass of filler material or preform in the presence of an infiltrating atmosphere. Under these conditions, the molten matrix metal 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. The directionally solidified metal matrix composite may be heated to a temperature in excess of the liquidus temperature of the matrix metal and quenched. This technique allows the production of spontaneously infiltrated metal matrix composites having improved microstructures and properties.
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Aghajanian Michael K.
Becker Kurt J.
Biel, Jr. John P.
Kantner Robert C.
Bradley Paula A.
Lanxide Technology Company, LP
Lewis Carol A.
Mortenson Mark G.
Pelto Rex E.
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