Aluminum Company of America

Warren H Hunt

Ralph R Sawtell

David I Yun

Eric T Streicher

H Robert Baumgartner

Michael F Ehman

Thomas J Rodjom

John H Milsom

Erik J Hilinski

Metal matrix composites are manufactured in a vacuum die casting machine. Solid aggregate material is placed in a die, the die is evacuated, and molten metal is driven by a piston to infiltrate the solid aggregate material where it subsequently solidifies to form a metal matrix composite.

Monolithic metal matrix composite

A method of preparing a metal alloy product from a powder blend. The method comprising: (a) cold pressing a blend to form a compact, the metal blend comprising a metal powder phase and at least one reinforcement phase having a hardness greater than the metal phase; (b) heating the compact to form a preheated compact; and (c) hot working the heated compact. In a preferred method, the powder metal blend comprises 50 to 90 vol. % of an aluminum alloy powder and 10 to 50 vol. % of silicon carbide; the heating of the compact perforated in a nitrogen atmosphere to form a preheated compact; and the extruded hot compact is hot worked. Hot working may take the form of forging, rolling, upset forging, exuding, compacting or other processes known in the art.

Method of producing structural metal matrix composite products from a

Metal matrix composites are manufactured in a vacuum die casting machine. Solid aggregate material, at least 65 volume percent, is placed in a die, the die is evacuated and heated, and molten metal is driven by a piston to infiltrate the solid aggregate material where it subsequently solidifies to form a metal matrix composite.

Fabrication of metal matrix composites by vacuum die casting

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Export, PA, United States of America

Warren H Hunt