Cast composite materials having an Al-Mg matrix alloy

Details Cast composite materials having an Al-Mg matrix alloy Cast composite materials having an Al-Mg matrix alloy

1992-02-21

1993-09-21

Rosenbaum, Mark

Metal founding

Process

Shaping liquid metal against a forming surface

164 94, B22D 1914

Patent

active

052460576

ABSTRACT:
A method for preparing a composite material comprises the steps of providing a first mixture of a molten aluminum-base matrix alloy having at least about 4 percent by weight magnesium, and a mass of discontinuous reinforcing particles that are not soluble in the molten matrix alloy, and mixing the first mixture to wet the matrix alloy to the particles and to distribute the particles throughout the volume of the molten matrix alloy. The first matrix alloy is diluted to reduce the magnesium content of the mixture to less than about 4 percent by weight magnesium, to produce a second mixture, and the second mixture is cast. The second mixture has at least about 5 volume percent particles, and preferably has about 5-25 volume percent particles.

REFERENCES:
patent: 4382997 (1983-05-01), Henslee et al.
patent: 4916030 (1990-04-01), Christodoulou et al.
patent: 4943413 (1990-07-01), Tank
patent: 5000242 (1991-03-01), Burke

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