Rapid solidification effects during micropyretic synthesis of Ti₅₀Cu₅₀ intermetallic compound

Abstract

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 α=0.375nm. The formation of an f.c.c. phase in rapidly solidified Ti₅₀Cu₅₀ has been observed in earlier studies.