The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 24, 1982
Filed:
Apr. 21, 1980
Applicant:
Inventor:
Kevin S O'Hara, Peabody, MA (US);
Assignee:
General Electric Company, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148-2 ; 148 / ; 148 32 ; 148 39 ;
Abstract
A composite grained cast article is provided from a superalloy casting in the single grained condition, in one form, by mechanically working a portion of the article intended to operate at a lower temperature of up to about 1300.degree. F. The mechanically worked portion is then recrystallized by heating to provide a multi-grained portion. In another form, the multi-grained portion is provided by selective use of grain nucleation material during solidification.