Skip to Content
Find More Like This
Return to Search

Process of welding gamma prime-strengthened nickel-base superalloys

United States Patent

November 25, 2003
View the Complete Patent at the US Patent & Trademark Office
A process for welding superalloys, and particularly articles formed of gamma prime-strengthened nickel-base superalloys whose chemistries and/or microstructures differ. The process entails forming the faying surface of at least one of the articles to have a cladding layer of a filler material. The filler material may have a composition that is different from both of the articles, or the same as one of the articles. The cladding layer is machined to promote mating of the faying surfaces, after which the faying surfaces are mated and the articles welded together. After cooling, the welded assembly is free of thermally-induced cracks.
Speigel; Lyle B. (Niskayuna, NY), White; Raymond Alan (Schenectady, NY), Murphy; John Thomas (Niskayuna, NY), Nowak; Daniel Anthony (Alplaus, NY)
General Electric Company (Schenectady, NY)
10/ 005,009
December 4, 2001
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with Government support under Contract No. DEFC2195MC31176 awarded by the Department of Energy. The Government has certain rights in the invention.