Ceramic metal eutectics of fibrous microstructure

Cr₂O₃Mo and (CrAl)₂O₃ eutectics were investigated. Directional solidification was observed in these eutectics. By changing the solidification rate, the dependence of the microstructure on this parameter has been defined. The possibility of forming composites with a random metal fibre orientation has been demonstrated when the solidification rate is very high. A composite microstructure containing 30–60 μm grains can be obtained when these eutectics are cooled naturally after melting. After mechanical grinding these materials can be hot-pressed, resulting in a high strength, high work of fracture material.