Process for obtaining extruded semifinished products from high r

Details Process for obtaining extruded semifinished products from high r Process for obtaining extruded semifinished products from high r

1984-01-12

1986-03-11

Lieberman, Allan M.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Consolidation of powder prior to sintering

419 48, 419 67, B22F 100, C22F 110

Patent

active

045754500

ABSTRACT:
This invention relates to a process for obtaining extruded semifinished products from high resistance aluminum alloy powder.
It is characterized in that there is used particularly a powder of an aluminum-lithium alloy obtained by atomization in a neutral gas. This powder is loaded in a jacket of aluminum alloy of the 5000 type, then hot degassed under a pressure less than the atmospheric pressure; after sealing of the jacket, the unit is subjected to hot inverted extrusion and heat treated in the ambient air.
The plated composite semifinished product thus obtained exhibits a very high resistance and finds its application particularly in the aeronautical industry.

REFERENCES:
patent: 3664008 (1972-05-01), Haller
patent: 3954458 (1976-05-01), Roberts
patent: 4110131 (1978-08-01), Gessinger
patent: 4460541 (1984-07-01), Singleton et al.
patent: 4464199 (1984-08-01), Hildeman et al.

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