METHOD OF HEAT TREATING SUPERALLOY COMPONENT AND ALLOY COMPONENT

PROBLEM TO BE SOLVED: To provide a method of heat treating a superalloy component.SOLUTION: The method comprises the step of solution heat treating the component at a temperature below the γ' solvus temperature to produce a fine grain structure in the component. Insulation is placed over a firs...

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Hauptverfasser:	DAVID ULRICH FURRER, JOSEPH ANDREW LEMSKY, MARK CHRISTOPHER HARDY, ROBERT JOHN MITCHELL
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS ALLOYS BLASTING CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL FERROUS OR NON-FERROUS ALLOYS GAS-TURBINE PLANTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS STEAM ENGINES TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method of heat treating a superalloy component.SOLUTION: The method comprises the step of solution heat treating the component at a temperature below the γ' solvus temperature to produce a fine grain structure in the component. Insulation is placed over a first area of the component to form an insulated assembly. The insulated assembly is placed in a furnace at a temperature below the γ' solvus temperature and maintained at that temperature for a predetermined time to achieve a uniform temperature in the component. The temperature is increased at a predetermined rate to a temperature above the γ' solvus temperature to maintain a fine grain structure in a first region, to produce a coarse grain structure in a second region and to produce a transitional structure in a third region between the first and second regions of the component. The insulated assembly is removed from the furnace when the second region of the component has been above the γ' solvus temperature for a predetermined time and/or the first region of the component has reached a predetermined temperature.