Thermomechanical treatment process for superalloys

Details Thermomechanical treatment process for superalloys Thermomechanical treatment process for superalloys

1984-12-19

1986-09-30

Dean, R.

Metal treatment

Compositions

Heat treating

148 127N, 148410, C22F 110

Patent

active

046145508

ABSTRACT:
Thermo-mechanical treatment of superalloys enabling simultaneously the production of a structure which is fine and homogeneous, with work hardened grains, a reduction in the stresses resulting from cooling and the absence of parasitic phase (Ni.sub.3 Nb-.delta. in the form of platelets for the Ni bases), characterized by an isothermal aging of predetermined duration after deformation in the final shaping sequence and in the finishing sequence which is followed by a limited amount of deformation and by a final heat treatment constituted solely by annealing producing precipitation of the hardening phase, this final treatment being optionally arranged to follow the finishing treatment, or in sequence, after cooling in air.

REFERENCES:
patent: 3676225 (1972-07-01), Owczarski et al.

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