Current status of research and development on nickel and iron aluminides

Conference · Wed Dec 01 04:00:00 EST 1993

OSTI ID:10108395

Liu, C T; George, E P; McKamey, C G

This paper provides a comprehensive review of current status of research and development on nickel and iron aluminides based on Ni{sub 3}Al, NiAl, Fe{sub 3}Al and FeAl. These aluminides possess attractive properties for elevated-temperature structural use; however, brittle fracture and poor fracture resistance have limited their use as engineering materials in many cases. in recent years, considerable effort has been devoted to the study of the brittle fracture behavior of these aluminides; as a result, both intrinsic and extrinsic factors governing brittle fracture have been identified. Surprisingly, moisture-induced hydrogen embrittlement has been recognized as one of the major causes of low ductility and brittle fracture in Ni{sub 3}Al, Fe{sub 3}Al and FeAl at ambient temperatures. These efforts have led to the development of ductile and strong aluminide alloys for structural applications. Industrial interest in these aluminide alloys is high, and several examples of industrial involvement are mentioned.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10108395
• Report Number(s): CONF-931239--1; ON: DE94004247
• Country of Publication: United States
• Language: English

Related Subjects

29 ENERGY PLANNING, POLICY, AND ECONOMY
290500
36 MATERIALS SCIENCE
360103
ALUMINIUM ALLOYS
INTERMETALLIC COMPOUNDS
IRON BASE ALLOYS
MECHANICAL PROPERTIES
NICKEL BASE ALLOYS
RESEARCH, DEVELOPMENT, DEMONSTRATION, AND COMMERCIALIZATION
REVIEWS
USES