Patent ID: 8394215

Claim:
A process for repairing cracks in a workpiece comprising the steps of: providing a workpiece having a crack to be repaired; applying a first layer of a nickel or cobalt base alloy material to a root of said crack in an amount sufficient to fill a portion of the crack; subjecting said workpiece with said nickel or cobalt base alloy material to a first heat treatment at a temperature in the range of from about 1950 to 2300° F. for a time period in the range of from about 5.0 to 30 minutes; depositing a weld material which assists in providing a diffusion medium having a composition different from said nickel or cobalt base alloy material to said crack using a welding technique subsequent to said first heat treatment; depositing a second layer of a nickel or cobalt based alloy repair material over the weld material; and subjecting said workpiece with said second layer of a nickel or cobalt based alloy repair material and said weld material to a second heat treatment.