Alloys containing insoluble phases and method of manufacture the

Details Alloys containing insoluble phases and method of manufacture the Alloys containing insoluble phases and method of manufacture the

1995-10-02

1998-06-16

Lin, Kuang Y.

Metal founding

Process

Shaping liquid metal against a forming surface

164 581, B22D 1914

Patent

active

057656231

ABSTRACT:
The invention provides a new method for casting alloys containing a finely divided phase. A bath of the molten metal having a melting point is provided. A finely divided solid metal having a melting point greater than the melting point of molten metal is introduced into the molten metal. The finely divided metal is reacted with the molten metal to form a solid phase within the molten metal. The molten bath is then mixed to distribute the solid phase within the molten metal. The molten alloy is then cast into a solid object containing the solid phase. The solid phase is insoluble in the matrix and has a size related to the initial size of the finely divided solid. The alloy of the invention advantageously consists essentially of, by weight percent, about 3 to 40 aluminum, about 0.8 to 25 nickel, about 0 to 12 copper and balance zinc and incidental impurities. The alloy has a zinc-containing matrix with nickel-containing aluminides distributed throughout the matrix.

REFERENCES:
patent: 3753702 (1973-08-01), Radtke et al.
patent: 3758298 (1973-09-01), Eppich
patent: 4082573 (1978-04-01), Schoerner et al.
patent: 4148671 (1979-04-01), Morris et al.
patent: 4717540 (1988-01-01), McRae et al.
patent: 4906531 (1990-03-01), Ohmura et al.
"Preparation and Casting of Metal-Particulate Non-Metal Composite" by Mehrabian et al, Met. Trans., vol. 5, Aug. 1974, p. 1899.

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