Attempt to control the interfacial strength
Schneibel, J.H.
Subramanian, R.
United States. Department of Energy. Office of Energy Research.
Oak Ridge National Laboratory
1997-11-01
English
Composites consisting of a B2 iron aluminide matrix and 40 vol.% of TiB{sub 2} particles were processed by liquid phase sintering. In order to encourage segregation of B or Ti at the FeAl/TiB{sub 2} interfaces, the iron aluminide matrix was microalloyed with B or Ti, respectively. Additions of Ti degraded the mechanical properties. However, for composites microalloyed with B, room temperature flexure tests show slight increases in the maximum strength (from 1250 to 1380 MPa) and the fracture toughness. Interfacial segregation of B may have contributed to this result. Significantly improved processing of the composites would be required in order to verify the effect of B conclusively. 15 refs., 6 figs., 2 tabs.
Iron Compounds
Titanium Borides
36 Materials Science
Surface Tension
Aluminium Compounds
Composite Materials
Sintering
Fracture Properties
Ceramics
Materials Week `97, Indianapolis, IN (United States), 14-18 Sep 1997
Article
7 p.
Text
other: DE98001060
rep-no: ORNL/CP--94919
rep-no: CONF-970980--
grantno: AC05-96OR22464
osti: 548878
https://digital.library.unt.edu/ark:/67531/metadc695714/
ark: ark:/67531/metadc695714