Phase Diagrams of the Titanium-Aluminum, Titanium-Chromium-Iron, and Titanium-Oxygen Alloy Systems

Assessment of the Fe-Ti system

“…Similarly, the solidus data by Kivilahti and Tarasova [23] on the Ti-rich side are well reproduced, except for the most Fe-rich alloy, which indicates a lower temperature. This indication is supported by one point by van Thyne et al [31] For the liquidus data, the calculated values are lower than the experimental information by Kivilahti and Tarasova, [23] which, however, extrapolate to a melting point for Ti considerably higher than the accepted one. On the other hand, a data point on the liquidus, reported by van Thyne et al, [31] is well reproduced.…”

“…pct Fe) has been studied by van Thyne et al [31] using iodide Ti up to 30 at. pct Fe and then, at higher Fe contents, high-purity sponge Ti.…”

Microstructures of two-phase Ti–Cr alloys containing the TiCr2 Laves phase intermetallic

“…Twinning in TiCr 2 has been reported by many others as well, 7,17 and twinning has also been reported in the NbCr 2 Laves phase. Chu 18 describes annealing twins that form by the accumulation of faceted NbCr 2 grain boundaries, while others suggest that the twinning occurs due to a C14 to C15 phase transformation.…”

Phase Equilibria in the Fe-Mo-Ti Ternary System at 1173 K (900 °C) and 1023 K (750 °C)

“…For Ti-rich A2 compositions, good agreement was observed between the limit of solubility of Fe and that reported in the Fe-Ti binary system. [20,21] In contrast, higher Fe concentrations were found in the Mo-rich A2 phase than reported in the Fe-Mo binary system. [22,23] This was particularly pronounced in alloys TF20M60 and TF20M70 following heat treatment at 1023 K (750°C) where the 1000 hour heat treatment period may not have been sufficient to reach equilibrium conditions.…”