Turbine airfoil component and method for making
US8770944B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2011 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jan 3, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49336
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A component such as a turbine bucket or blade, and method for making the component, are presented. One embodiment is an article that comprises an airfoil casting portion comprising a plurality of integral regions, wherein the plurality of integral regions comprises a single-crystalline region and a columnar-grained region. Another embodiment is a method for fabricating an article. The method comprises providing a quantity of molten metal; providing a mold defining an airfoil portion having an axial direction and a transverse direction, wherein the airfoil portion of the mold comprises a single-crystal growth region and a columnar growth region disposed along the transverse direction from the single crystal growth region; introducing the molten metal into the mold; and solidifying the metal such that a solidification front progresses in the axial direction to produce an airfoil casting portion comprising a single-crystalline region and a columnar-grained region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.