Abstract
The addition of small amounts of silicon (usually less than R ~1 at. pct) to strengthen α(hcp)-β(bcc) and martensitic Ti alloys is well established. The equilibrium suicide formed in these alloys has been identified as hexagonal Ti5Si3 (Refs. 1, 2) (or (Ti,Zr)5Si3 phase in alloys containing Zr), although there is also a report of a tetragonal Ti3Si phase. The use of Si to age harden β Ti alloys, specifically Ti-V-Si alloys, has also been reported. While the precipitation sequence in these alloys involves an identifiable hexagonal
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Franti, G.W., Koss, D.A. On the equilibrium silicide in beta Ti-V alloys containing Si. Metall Trans A 8, 1639–1641 (1977). https://doi.org/10.1007/BF02644871
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DOI: https://doi.org/10.1007/BF02644871