Rapid solidification effects during micropyretic synthesis of Ti50Cu50 intermetallic compound

It has been shown that Ti50Cu50 can be synthesised by micropyretic/combustion synthesis. This is the first study showing the feasibility of micropyretic synthesis of this alloy. The microstructure of the synthesized alloy is discussed in this paper. X-ray diffraction of the combusted specimen indicated the presence of the TiCu and Ti2Cu phases. The width of the diffraction peaks was large indicating the presence of a fine-grained microstructure in the specimen. TEM examination of the specimen showed a fine-grained microstructure comprising in addition to the phases indicated by X-ray diffraction, an f.c.c. phase having the lattice parameter a=0.375 nm. The formation of an f.c.c. phase in rapidly solidified Ti50Cu50 has been observed in earlier studies.