Patent ID: 6530971
Filing Date: 2003-03-11
Classification: B23K,B23P,F23R

Abstract:
A nickel-base braze material for repairing nickel-base and cobalt-base superalloy articles (10), the braze material comprising first and second nickel-base powders, the first nickel-base powder consisting essentially of in weight percent: 10 to 18 chromium, 6 to 14 cobalt, 3.5 to 6.5 titanium, 1.5 to 4.5 aluminum, 2.5 to 5.5 tungsten, 2.5 to 5.5 molybdenum, 0.05 to 0.30 carbon, 0.01 to 0.20 zirconium, 0.001 to 0.2 boron, wherein the combination of tungsten and molybdenum is at least 5.0, the balance being nickel and incidental impurities; the second nickel-base powder consisting of, in weight percent: 10.0 to 20.0 chromium, 2.0 to 5.0 boron, up to 3.0 iron, the balance being nickel and incidental impurities, wherein the weight ratio of the first nickel-base powder to the second nickel-base powder in the braze material is about 50:50 to 75:25.