METHOD OF WELDING SINGLE CRYSTAL TURBINE BLADE TIPS WITH AN OXIDATION-RESISTANT FILLER MATERIAL

A method for depositing material on a turbine airfoil having a tip wall extending past a tip cap, wherein the tip wall includes a first alloy with a single crystal microstructure. The method includes: depositing a second alloy on at least a portion of the tip wall to form a repair structure, wherein...

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Bibliographische Detailangaben
Hauptverfasser:	SCHOONOVER JEFFREY JON, MIGLIETTI WARREN MARTIN ANDRE, AZER MAGDI NAIM
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL BLASTING CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ENGINE PLANTS IN GENERAL HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SOLDERING OR UNSOLDERING SPRAYING OR ATOMISING IN GENERAL STEAM ENGINES TRANSPORTING WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method for depositing material on a turbine airfoil having a tip wall extending past a tip cap, wherein the tip wall includes a first alloy with a single crystal microstructure. The method includes: depositing a second alloy on at least a portion of the tip wall to form a repair structure, wherein a high temperature oxidation resistance of the second alloy is greater than a high temperature oxidation resistance of the first alloy, and wherein the repair structure has a crystallographic orientation that is substantially the same as a crystallographic orientation of the tip wall.