Method for heat treating a serviced turbine part

Details Method for heat treating a serviced turbine part Method for heat treating a serviced turbine part

C - Chemistry, Metallurgy

21

D

C21D 1/773 (2006.01)

Patent

CA 2572826

A method for heat treating a serviced turbine part (10) to improve a hold time fatigue cracking resistance of the serviced turbine part is provided. The method includes positioning the serviced turbine part in a vacuum furnace configured to limit surface oxidation. The serviced turbine part is controllably heated to prevent distortion. A surface damage layer is recrystallized into a fine grain structure to prevent fatigue crack initiation. The serviced turbine part is controllably cooled to prevent distortion.

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