Honeywell International Inc.

Krish Krishnamurthy

James Hall

Aluminum iron based alloys and methods for producing the same are provided. In an exemplary embodiment, a method for producing an aluminum iron based alloy includes melting an aluminum iron based alloy to form a melt. The aluminum iron based alloy includes iron at about 2.0 to about 7.5 weight percent, silicon at about 0.5 to about 3.0 weight percent, aluminum at about 86 to about 97.5 weight percent, and one or more of manganese, vanadium, chromium, molybdenum, tungsten, niobium, zirconium, cerium, erbium, magnesium, calcium, scandium, ytterbium, yttrium, or tantalum at about 0.05 to about 3.5 weight percent. The melt is solidified at about 10degrees centigrade per second of faster to form particulates. The particulates are degassed at a degassing temperature of about 400 to about 500 degrees centigrade.

Aluminum iron based alloys and methods of producing the same

There is provided a method for fabricating a dual alloy structure that may in turn be machined to fabricate a rotary component such as an impeller for use in a gas turbine engine. The method provides a first titanium alloy and a second titanium alloy. The first titanium alloy displays characteristics, such as high strength, suitable for application in the bore area of an impeller. The second titanium alloy displays characteristics, such as high temperature creep resistance, suitable for use in the outer radial area of an impeller. A bore subelement is fabricated from the first titanium alloy. A body subelement is fabricated from the second titanium alloy. The bore subelement and body subelement are joined by inertia welding at a common welding surface. Each subelement and/or the resulting welded structure is heat treated to achieve a desired microstructure.

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Chandler, AZ, United States of America

Krish Krishnamurthy