Alloys having a nickel-iron-chromium base for structural hardeni

Details Alloys having a nickel-iron-chromium base for structural hardeni Alloys having a nickel-iron-chromium base for structural hardeni

1974-08-14

1976-08-03

Dean, R.

Metal treatment

Process of modifying or maintaining internal physical...

Chemical-heat removing or burning of metal

75171, 148 325, C22F 110

Patent

active

039727521

ABSTRACT:
Method of preparation of an alloy comprising the steps of preparing a nickel-iron-chromium based alloy, placing the alloy in solution at temperatures between 925.degree.C and 1060.degree.C, followed by a quick cooling, aging the alloy at a first level of temperature and exposure time to obtain a precipitation of .gamma.' phase prior to a precipitation of a .gamma." phase and reducing the temperature to a second level of at least 700.degree.C.

REFERENCES:
patent: 2570193 (1951-10-01), Bieber et al.
patent: 3046108 (1962-07-01), Eiselstein

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