Patent ID: 11913356
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Surface technology, coating (Chemistry)
Classification: CPC F  C | IPC C  F

Claim 4:
5. A method of making a turbine blade including an airfoil made of a material having a single-crystal crystallographic structure, a platform connected to the airfoil and a root fillet defined between the airfoil and the platform, the method comprising:
determining a location of peak stress in the root fillet expected during use of the turbine blade; and
during manufacturing of the turbine blade:
controlling a secondary crystallographic orientation of the material based on the location of peak stress in the root fillet to be perpendicular to a reference plane that is perpendicular to an edge of the root fillet, wherein the edge of the root fillet being closer to the airfoil than to the platform; and
controlling a primary crystallographic orientation of the material to be at 30 degrees from a stacking line of the airfoil.