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:
Nov. 02, 1999
Filed:
Dec. 04, 1996
Applicant:
Inventors:
Daniel P DeLuca, Tequesta, FL (US);
Charles M Biondo, Palm Beach Gardens, FL (US);
Assignee:
United Technologies Corp., Hartford, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F / ;
U.S. Cl.
CPC ...
148555 ; 148562 ; 148675 ;
Abstract
A nickel base superalloy, having either columnar or equiaxed grain structure, which has significantly improved resistance to hydrogen embrittlement, and to fatigue in air. The material is processed so as to be essentially free of script type carbides, .gamma./.gamma.' eutectic islands and porosity. The processing includes heat treating above the .gamma.' solvus temperature to solution the script type carbides and eutectic islands, followed by HIP to eliminate the porosity.