REGENERATION OF NICKEL-BASED SUPERALLOY PARTS DAMAGED BY CREEP

摘要

The method for regeneration of pieces made of nickel-based superalloy such as turbine blades arriving at the end of the operating potential as a result of creep damage, in particular, consists in maintaining the workpiece for 1 hour at least at a temperature sufficient to re-dissolve a volumetric fraction of the upper phase g is 50 then to monitor the technical field, for controlling the speed of cooling to regenerate its morphology microstructural. / p & & p & this method for the regeneration of the properties of creep allows a gain of 30 of the time of the life of the pieces. Finally, this method is compatible with the initial protection which is stored in the alloy a good corrosion resistance.