Abstract
In the present work, the microstructure and compression properties of two novel γ(TiAl) based alloys, Ti-45Al-5Fe and Ti-45Al-5Fe-5Nb, have been investigated. Both alloys had a relatively fine as-cast structure generally consisting of the γ(TiAl) and τ2(Al2FeTi) phases with a minor amount of the α2(Ti3Al) and β(B2) phase. The compression properties of the novel alloys were measured at room and elevated temperatures. The Ti-45Al-5Fe-5Nb alloy showed higher room temperature ductility and similar strength at room and elevated temperatures as well as improved workability at elevated temperatures as compared to β-solidifying γ(TiAl) alloys of last generation (TNM alloys).
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