Processing and mechanical properties of laminar Al{sub 2}O{sub 3}-Ni{sub 3}Al composites

Conference · Thu Sep 01 00:00:00 EDT 1994

OSTI ID:10184679

Schneibel, J H; Alexander, K B

Several compositions of the intermetallic alloy Ni{sub 3}Al were examined with respect to (a) their wetting of Al{sub 2}O{sub 3} and (b) their energy absorption capability in Al{sub 2}O{sub 3}/Ni{sub 3}Al laminates. Wetting is enhanced by small additions of carbon (e.g., 0.1 at. %), and bonding by additions of zirconium (e.g., 1 at. %). Chevron-notched laminate specimens were tested in three-point bending to assess the energy absorption due to the presence of a thin layer of Ni{sub 3}Al. A nickel aluminide with the composition of Ni-22Al-1Zr-0.1C-0.1B was found to have a reasonable combination of wetting, adhesion and energy absorption. Interfacial bonding was found to be weak in all laminates.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 10184679
• Report Number(s): CONF-940411-53; ON: DE94019332; TRN: 94:008828
• Resource Relation: Conference: Spring meeting of the Materials Research Society (MRS),San Francisco, CA (United States),4-8 Apr 1994; Other Information: PBD: [1994]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
MECHANICAL PROPERTIES
NICKEL ALLOYS
ALUMINIUM ALLOYS
INTERMETALLIC COMPOUNDS
COMPOSITE MATERIALS
ADHESION
WETTABILITY
360103
360203