Method for controlling properties of powdered metals and alloys

Details Method for controlling properties of powdered metals and alloys Method for controlling properties of powdered metals and alloys

1983-12-27

1984-11-20

Gilden, Leon

Metal deforming

By use of closed-die and coacting work-forcer

Forcing work into or within closed die; e.g., forging

72377, B21D 2200

Patent

active

044831749

ABSTRACT:
A method for increasing strength and/or hardness of a sintered powder metal specimen containing tungsten by cold working is disclosed. Compressive force is applied to the specimen slowly so that the yield strength of the specimen progressively increases and the specimen exhibits squirming instability as its diameter increases.

REFERENCES:
patent: 3167859 (1965-02-01), Bailey
patent: 3209453 (1965-10-01), Bertoglio et al.
patent: 3832763 (1974-09-01), Schober
patent: 4045644 (1977-08-01), Shafer et al.
patent: 4299112 (1981-11-01), Kondo

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