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High-temperature fabricable nickel-iron aluminides

Patent ·
OSTI ID:7021699
Nickel-iron aluminides are described that are based on Ni[sub 3]Al, and have significant iron content, to which additions of hafnium, boron, carbon and cerium are made resulting in Ni[sub 3]Al base alloys that can be fabricated at higher temperatures than similar alloys previously developed. Further addition of molybdenum improves oxidation and cracking resistance. These alloys possess the advantages of ductility, hot fabricability, strength, and oxidation resistance.
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
Patent Number(s):
A; US 4722828
Application Number:
PPN: US 6-730602
OSTI ID:
7021699
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
ALUMINIUM ALLOYS
BORON
CARBON
CERIUM
CORROSION RESISTANCE
CRACK PROPAGATION
ELEMENTS
FABRICATION
HAFNIUM
INTERMETALLIC COMPOUNDS
IRON ALLOYS
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
METALS
MOLYBDENUM
NICKEL ALLOYS
NONMETALS
RARE EARTHS
SEMIMETALS
TRANSITION ELEMENTS