Integral porous-core metal bodies and in situ method of manufact

Details Integral porous-core metal bodies and in situ method of manufact Integral porous-core metal bodies and in situ method of manufact

1995-02-03

1996-10-08

Jordan, Charles T.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 8, 419 28, 419 29, 419 49, 419 50, 295271, 29530, 428550, 428554, B22F 704

Patent

active

055640648

ABSTRACT:
A method for forming a gas-filled consolidated metal billet, involving preparing a metallic shell container, filling the shell with a metal core material and pressurized gas, and consolidating the shell and its contents to form the billet. The consolidated billet is further formed in the same manner as solid metal components by conventional wrought mill working technologies. After thus forming a shaped billet having a predetermined, desired geometry, it is subjected to a heat treatment that expands the gas trapped within the core, to produce in situ a metal body having an integral sandwich-type structure with a solid metal facing and a porous metal core.

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