Method for powder-metallurgic production of a workpiece from a h

Details Method for powder-metallurgic production of a workpiece from a h Method for powder-metallurgic production of a workpiece from a h

1976-10-15

1978-08-29

Schafer, Richard E.

Metal treatment

Compositions

Heat treating

294205, 29417, 75200, 75211, 75226, 148 115P, 148126, C22F 110

Patent

active

041101316

ABSTRACT:
A method for powder metallurgical production of a high temperature alloy body consists of mixing powdered alloy components or pre-alloys in the desired proportions; cold working the mix under a protective atmosphere; canning the cold-worked powder mixture; compressing the canned powder by extrusion or hot isostatic pressing to a form of dense blank; cutting said blank into slices; forging them at a constant temperature within the range of from 0.6 to 0.75 of the melting point at a strain rate of from 10.sup.-3 to 10.sup.0 S.sup.-1 ; and thereafter subjecting the forged body to a coarse-grain annealing between 1230.degree. and 1300.degree. C for up to 3 hours.

REFERENCES:
patent: 3420716 (1969-01-01), Slepitis
patent: 3776704 (1973-12-01), Benjamin
patent: 3823463 (1974-07-01), Weaver et al.
patent: 3865575 (1975-02-01), Volin et al.
patent: 3975219 (1976-08-01), Allen et al.
patent: 3976482 (1976-08-01), Larson

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