THERMODYNAMIC TREATMENT FOR SUPERALLOY TO OBTAIN STRUCTURE EQUIPPED WITH GOOD MECHANICAL PROPERTIES

摘要

The treatments thermomechanical of superalloys, making it possible to obtain both a fine structure and homogenous, of the grains cold-worked, a reduction of the stresses specific cooling and the absence of parasitic phase (ninb - d in the form of plates to the bases or) are characterized by an isothermal soak temperature and time determined, after deformation, in the sequence of the final roughing and finishing in the sequence of which follows with enchainement, for a degree of deformation limit and by a final heat treatment is only one of the technical field of hardening phase, the final treatment being able to follow the sequence of the finishing operation, either by enchainement, either after cooling in air.