Method of preparing improved eutectic or hyper-eutectic...

Details Method of preparing improved eutectic or hyper-eutectic... Method of preparing improved eutectic or hyper-eutectic...

C - Chemistry, Metallurgy

22

C

53/246, 53/344,

C22C 1/10 (2006.01) C22C 1/02 (2006.01) C22C 21/04 (2006.01) C22C 32/00 (2006.01)

Patent

CA 2030928

Abstract A method is described for preparing a refined eutectic or hyper-eutectic metal alloy, comprising: melting the eutectic or hyper-eutectic metal alloy; adding particles of non- metallic refractory material to the molten metal matrix; mixing together the molten metal alloy and the particles of refractory material, and; casting the resulting mixture under conditions causing precipitation of at least one intermetallic phase from the molten metal matrix during solidification thereof such that the intermetallics formed during solidification wet and engulf said refractory particles. The added particles may be very small and serve only to refine the precipitating intermetallics in the alloy or they may be larger and serve as reinforcing particles in a composite with the alloy.

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