US 12,146,419 B1
Multi-alloy turbine engine components and manufacture methods
Mario P. Bochiechio, Vernon, CT (US); and Kevin W. Schlichting, South Glastonbury, CT (US)
Assigned to RTX Corporation, Farmington, CT (US)
Filed by Raytheon Technologies Corporation, Farmington, CT (US)
Filed on Jan. 7, 2021, as Appl. No. 17/143,669.
Claims priority of provisional application 62/958,228, filed on Jan. 7, 2020.
Int. Cl. F01D 5/14 (2006.01); F01D 5/18 (2006.01); F01D 5/28 (2006.01)
CPC F01D 5/147 (2013.01) [F01D 5/187 (2013.01); F01D 5/28 (2013.01); F05D 2300/17 (2013.01); F05D 2300/173 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A blade comprising:
an airfoil extending to a tip;
an attachment root; and
a platform between the attachment root and the tip,
wherein the blade comprises individual pieces:
the platform comprises one or more said pieces of a first alloy;
one or more said pieces of a second alloy form a leading edge section of the airfoil;
one or more said pieces of a third alloy form a trailing edge section of the airfoil;
one or more said pieces of a fourth alloy form a spar of the airfoil between the leading edge section and trailing edge section and extending into the attachment root; and
one or more said pieces of a fifth alloy forms a tip section of the airfoil.