Patent ID: 7708184

Claim:
A method of repairing a crack in an airfoil and dimensionally restoring the airfoil, the method comprising the steps of: applying a braze alloy to a crack in an airfoil utilized in a gas turbine engine, wherein the airfoil is made of a base metal, the braze alloy includes a base material and a braze material, the base material has the same composition as the base metal, the braze alloy is composed of more than 50% of the base material and less than 50% of the braze material, and the airfoil is a single unitary component, wherein the base material is a cobalt superalloy and includes carbon, manganese, silicon, sulfur, chromium, nickel, tungsten, tantalum, titanium, zirconium, iron, boron, and cobalt, and the braze material includes carbon, chromium, nickel, boron, and cobalt; and exposing the airfoil to microwaves to melt the braze alloy and repair the crack in the airfoil.