Patent ID: 8703045

Claim:
A method of manufacturing a multiple composition component, comprising: arranging first, second and third constituent parts having first, second and third compositions respectively so that the first constituent part shares a first boundary with the second constituent part and the second constituent part shares a second boundary with the third constituent part; wherein the first, second and third constituent parts comprise superalloys and each superalloy comprises a gamma phase and a gamma prime phase and the three constituent parts are each either a powder or a solid; and processing so as to form a single solid component having first, second and third regions having the first, second and third compositions respectively, the processing including hot isostatic pressing and/or diffusion bonding, the hot isostatic pressing and/or diffusion bonding comprising hot isostatic pressing at a first temperature of 850° C. to 1000° C. and applying a pressure of 100 MPa for 4 hours and hot isostatic pressing at a second temperature of 50° C. below the gamma prime solvus temperature of the composition which has the lowest volume fraction of gamma prime phase and applying a pressure of 100 MPa for 2 hours.