Patent ID: 9347124
Filing Date: 2016-05-24
CPC Classification: B23K,C22C,C22F,F01D,F05D,Y10T

Claim Text:
1. A nickel base superalloy, alloy 247, including a welded seam therein wherein said welded seam was produced by the process of: a) prior to welding, heating the weld location to an initial predetermined temperature above about 2100 deg. F. with a first heat source, b) welding said nickel base superalloy with a second heat source; and, c) removing said second heat source immediately upon completion of said welding; and, d) performing a controlled step cooling of said weld location such that no more than about 30 weight percent of the γ′ phase is formed at any hold temperature during the step cool and hold process; and, e) cooling said weld location to room temperature to produce a final γ′ weight percent of less than 30 percent.