Paper number 1141
|A STUDY OF THE FIBRE/MATRIX INTERACE IN AN OXIDE-FIBRE/NICKEL-ALUMINIDE-MATRIX COMPOSITES|
Vjacheslav P. Buntushkin1, Igor V. Romanovich1, Natalie S. Sarkissyan2 and Mikhail Yu. Starostin2
1Russian Institute of Aviation Materials
2Solid State Physics Institute of the Russian Academy of Sciences, Chernogolovka
Moscow district, 142432 RUSSIA
|Summary||The paper describes microstructure of the fibre/matrix interface in oxide-fibre/Ni3Al-based-matrix composites obtained by pressure casting. Fibres of single-crystal alumina, alumina-YAG, and alumina-zirconia melt grown eutectics were used. Fibre/matrix interaction takes place during casting process in all the composites that does not normally produced the interface microstructure of a type that would yield sufficiently strong fibre/matrix bonding. Only YAG-containing fibres seem to be surrounded by a new formed phase that is bonded to both the fibre and matrix. Also the interface strength can be certainly improved due to a fibre surface roughness arisen because of different dissolution of different phases in eutectic fibres.
||Keywords|| sapphire fibres, eutectic fibres, oxide/nickel interface, Ni3Al alloy.
Theme : Metal Matrix Composites ; Interface and Interphase
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