Patent ID: 7484651

Claim:
A method for joining superalloy metallic members for repairing a superalloy turbine blade comprising: preparing a surface of a first superalloy metallic member, thereby providing a clean and an oxide-free surface, wherein said surface of said first superalloy metallic member comprises a first interlocking section; preparing a surface of a second superalloy metallic member, thereby providing a clean and an oxide-free surface, wherein said surface of the second superalloy metallic member comprises a second interlocking section wherein said second interlocking section corresponds to said first interlocking section; interlocking said first interlocking section with said second interlocking section such that said first interlocking section directly contacts said second interlocking section; applying pressure to said first and second superalloy metallic members, thereby forcing said clean and oxide-free surface of said first superalloy metallic member directly against said clean and oxide-free surface of said second superalloy metallic member thereby forming a joint area; sealing an outer edge of said joint area to form a sealed joint area, with the proviso that said sealing is not performed by brazing; and subjecting said members and said sealed joint area to a hot isostatic process operation.