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Superalloys with improved weldability for high temperature applications

United States Patent

September 4, 2001
View the Complete Patent at the US Patent & Trademark Office
A cast nickel-base superalloy component (10) is made having a composition containing small amounts of both boron and zirconium which are effective in combination to provide increased weldability, where such alloy is adapted for welding by weld (18) to a second superalloy piece, where the two pieces are firmly bonded together and have a Sigmajig transverse stress value (16) greater than 137.9 million Newtons per square meter.
Seth; Brij B. (Orlando, FL), George; Easo P. (Oak Ridge, TN), Babu; Sudarsanum S. (Oak Ridge, TN), Goodwin; Gene M. (Oak Ridge, TN), David; Stanislaus A. (Oak Ridge, TN), Moyer; Carol E. (Centreville, VA)
Siemens Westinghouse Power Corporation (Orlando, FL)
09/ 372,693
August 11, 1999
GOVERNMENT CONTRACT The Government of the United States of America has rights in this invention pursuant to Contract No. DE-FC21-95MC32267, awarded by the United States Department of Energy. Work also done under ORNL Work for Others contract ERD-96-1377.