Component possessing high resistance to corrosion and oxidation,

Details Component possessing high resistance to corrosion and oxidation, Component possessing high resistance to corrosion and oxidation,

1984-02-01

1985-07-30

Stallard, Wayland

Metal treatment

Compositions

Heat treating

148 115P, 148405, 148426, 148427, 148428, C22F 110

Patent

active

045319812

ABSTRACT:
A component possessing high resistance to corrosion and oxidation, composed of a dispersion-hardened superalloy having a high creep strength, comprises a coarse-grained core (1) which has high strength at high temperatures, and a fine-grained skin zone (2) which forms a case. The component is manufactured with the aid of a heat-treatment, or thermomechanical treatment, in a manner such that, starting from a fine-grained initial condition, the skin zone (2) is restrained from participating in the recrystallization which leads to the formation of coarse grains in the core (1).

REFERENCES:
patent: 3260505 (1966-07-01), Ver Snyder
patent: 4345950 (1982-08-01), O'Hara
patent: 4401480 (1983-08-01), Crombie, III

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