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US 10,035,185 B2Granted
Hybrid turbine blade for improved engine performance or architecture
AssigneeUnited Technologies Corporation
InventorsDilip M. Shah, Alan D. Cetel
Life of this patent
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Abstract
A method is provided for casting an article such as a blade having an attachment root and an airfoil, the airfoil having a proximal end and a distal end. The method comprises introducing a molten alloy into a mold; and varying a composition of the introduced alloy during the introduction so as to produce a compositional variation.
Claims30
An alloy comprising, by weight percent:
- nickel as a largest content;
- 4.5-8.5 Cr;
- 0.5-1.5 Mo;
- 2.5-3.5 W;
- 1.5-2.5 Ta;
- 5.5-7.5 Al;
- 4.5-5.5 Co;
- 0-4 Re;
- and
- 0.05-0.20 Hf.
7 more elements
An alloy comprising, by weight percent:
- nickel as a largest content;
- 5-8 Cr
- 0.5-1.0 Mo;
- 2.5-3.5 W
- 1.5-2.5 Ta;
- 5.5-7.5 Al;
- 4.5-5.5 Co;
- 0-4 Re;
- and
- 0.05-0.20 Hf.
7 more elements
Dependencies are inferred from the claim text.