Directional solidification of metal matrix composites

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

B - Operations, Transporting

22

D

75/1.3

B22D 19/14 (2006.01) C04B 41/51 (2006.01) C04B 41/88 (2006.01) C22C 1/10 (2006.01)

Patent

CA 2000800

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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