Powder-metallurgical process for the production of a green press

Details Powder-metallurgical process for the production of a green press Powder-metallurgical process for the production of a green press

1988-05-06

1989-05-23

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

419 33, 419 62, 419 66, B22F 100

Patent

active

048327417

ABSTRACT:
A green pressed article of high strength and of low relative density, formed from a heat-resistant aluminum alloy of the Al/Fe/X or Al/Cr/X type, where X is Ti, Ce, Zr, Hf, V, Nb, Cr, Mo or W, is produced by a powder-metallurgical process, wherein an alloy melt is atomized to form fine particles by means of an inert gas jet, with which 0.5 to 2% by volume of oxygen is admixed, and the powder produced in this manner is compacted. Nitrogen, argon or helium can be employed as inert gas. The green pressed article is preferably formed from a small proportion of coarser, non-spherical particles and a greater proportion of finer, spherical particles.

REFERENCES:
patent: 4737339 (1988-04-01), Couper
patent: 4758405 (1988-07-01), Couper

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