Methods of producing clad metals

Details Methods of producing clad metals Methods of producing clad metals

1990-03-07

1990-10-30

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Making composite or hollow article

419 28, 419 29, 419 49, 427350, 4273768, B22F 700

Patent

active

049667483

ABSTRACT:
A clad metal is produced by forming a layer of a dissimilar metal powder on the surface of a base metal by cold fixing the powder to the surface under pressure, densing only the surface and a subsurface area of the layer of the dissimilar metal powder by melting and immediately solidifying in a vacuum, compressing the layer of the dissimilar metal powder together with the base metal at a temperature not higher than the solidus-line temperature of the two dissimilar metals under a pressure of not lower than 300 kgf/cm.sup.2 (or 29.4 MPa) using a hot isostatic press, and hot working the layer of the dissimilar metal powder together with the base metal.

REFERENCES:
patent: 4259413 (1981-03-01), Taglang et al.
patent: 4627958 (1986-12-01), Hays
patent: 4657822 (1987-04-01), Goldstein
patent: 4844863 (1989-07-01), Miyasaka

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