Integrally repaired bladed rotor

An integrally bladed rotor for an aircraft engine, said integrally bladed rotor comprising:

• a parent-metal portion having a grain structure and a specified plastic strain criteria;
• a new-metal portion;
• a weld nugget between said parent-metal portion and said new-metal portion, said weld nugget formed by welding said parent-metal portion and said new-metal portion together;
• wherein adjacent said weld nugget, a heat affected zone extends into said parent-metal portion and into said new-metal portion;
• wherein said weld nugget and said heat affected zone have specified coordinate point locations therein, and wherein said weld nugget, said heat affected zone, and at least some of said new-metal portion, have been worked by application of one or more indenters to provide plastic strain for each of said specified coordinate point locations which meets or exceeds a minimum threshold plastic strain criteria for said integrally bladed rotor;
• comprising, in said weld nugget and in said heat affected zone, a recrystallized grain structure comparable to said grain structure in said parent-metal portion, after heat treatment;
• wherein said minimum threshold plastic strain criteria is equal to or greater than said specified plastic strain criteria of said parent metal portion;
• and
• wherein said plastic strain for each of said specified coordinate point locations is at least twenty five percent (25%) plastic strain.