Metal treatment – Compositions – Heat treating
Patent
1983-06-06
1986-04-22
Dean, R.
Metal treatment
Compositions
Heat treating
148 3, 148 13, 148162, 148404, 148410, C22F 110
Patent
active
045836086
ABSTRACT:
Concepts relating to the heat treatment of single crystal superalloy articles are disclosed. A first concept is the use of a heat treatment sequence which includes incipient melting of the article being heat treated followed by one or more steps which essentially heal the incipient melting damage. A second concept relates to the treatment of previously heat treated single crystal articles which have incipient melting. Methods are disclosed for healing this damage and for recovering the mechanical properties of such articles. A third concept disclosed is a particular cycle which permits effective heat treatment of a specific single crystal alloy composition.
REFERENCES:
patent: 4209348 (1980-06-01), Duhl et al.
Chen Otis Y.
Field Thomas T.
Geary Arthur R.
Salkeld Richard W.
Ulion Nicholas E.
Dean R.
Sohl Charles E.
United Technologies Corporation
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