A method of weld repairing a Superalloy material at ambient
temperature without causing cracking of the base material. A
Superalloy material Such as CM-247 LC, as is commonly used
in gas turbine blade applications, is Subjected to an overage
pre-weld heat treatment in order to grow the Volume percent
age of gamma prime precipitate in the material to a level
sufficient to permit ambient temperature welding without
cracking. CM-247 LC material is heated in a vacuum furnace
at a rate of about 0.5° C. per minute to an intermediate
temperature of about 885°C. The material is then gas fan
quenched to a temperature of about 52°C. to grow the gamma
prime precipitate percentage to about 55%. A fusion repair
weld may then be performed on the material at an ambient
temperature using a filler material having a chemistry match
ing a chemistry of the base material.