Effect of solution treatment and aging conditions on tensile properties of Ti-Al-Fe-Si alloy

The effect of the solution treatment and aging (STA) conditions on the tensile properties of Ti-4 mass%Fe-4 mass%Al-0.25 mass%Si alloy has been investigated in this work. The obtained results revealed that varying the solution temperature affected the stability of the β phase due to the Fe partitioning (which inhibited the β→α′/α″ reaction during water quenching), while the magnitude of the aging temperature determined the predominant products of the β→isothermal ω→secondary αrich→secondary αlean+TiFe phase transformation with distinct tensile characteristics. In addition, the relationship between the alloy microstructure and its tensile properties was discussed.