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:
Apr. 30, 1985
Filed:
Dec. 06, 1982
Applicant:
Inventors:
Anthony F Giamei, Middletown, CT (US);
Bernard H Kear, Whitehouse Station, NJ (US);
Assignee:
United Technologies Corporation, Hartford, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22C / ; C21D / ;
U.S. Cl.
CPC ...
420454 ; 148 / ; 148410 ;
Abstract
Single crystal nickel base superalloys of the gamma-gamma prime type are strengthened by deforming them 2-14% at temperatures in the range 700.degree.-1100.degree. C. Yield strength will be increased typically by 25-50%, depending on the crystallographic orientation. Careful control of parameters is necessary to obtain the strengthening while avoiding recrystallization. The metal is first homogenized and provided with a fine gamma prime deformation; strain rates in the range of 10.sup.-1 cm/cm/sec or less are used.