Abstract

Phase relations in the Ti–V–Sn system are of great importance for design of aerospace titanium alloys. However, reported Ti–V–Sn ternary phase diagrams present great differences. The isothermal section of the Ti–V side in the Ti–V–Sn system at 1073, 1173, and 1273 K was established using equilibria alloys. There are 11 two-phase equilibria and 3 three-phase equilibria, 9 two-phase equilibria and 3 three-phase equilibria, and 9 two-phase equilibria and 3 three-phase equilibria in the isothermal section at 1073, 1173, and 1273 K, respectively. In addition, remarkable ternary solubility in some binary compounds was detected, e.g., up to 21.18 and 22.23 at.% V in Ti3Sn and Ti2Sn, respectively, at 1273 K.

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