Abstract
By the methods of DTA, X-ray diffraction, metallography and microprobe analysis, phase equilibria in the Ti-corner (more than 50 at.% Ti) of the Ti–Si–Sn system were studied. The solidus projection and the melting diagram (solidus+liquidus) were constructed. A new ternary compound T of composition Ti 5Si 1.2–1.6Sn 1.8–1.4 was found to form with the crystal structure of W 5Si 3-type. The ternary eutectic equilibrium L↔〈β-Ti〉+〈Ti 5Si 3〉+〈Ti 3Sn〉 was established to occur at 1460 °C with the composition of the invariant point E at ∼77Ti–9Si–14Sn. Microhardness measurements were carried out for the primary grains of the alloys with 5 at.% Si.
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