The melting diagram of the Ti–Zr–Sn system below 40 at.% Sn

• Published in: Journal of alloys and compounds Vol. 473; no. 1; pp. 341 - 346
• Main Authors: Saltykov, V.A., Meleshevich, K.A., Samelyuk, A.V., Bulanova, M.V., Tedenac, J.C.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 03.04.2009; Elsevier
• Subjects: Chemical Sciences; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Intermetallics; Material chemistry; Materials science; Metals; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Phase diagrams of metals and alloys; Physics; Scanning electron microscopy; Thermal analysis; X-ray diffraction; Intermetallics; X-ray diffraction; Scanning electron microscopy; Thermal analysis; Metals; Phase diagrams; Melting; Intermetallic compounds; Crystallization; Liquidus; Metallography; Differential thermal analysis; XRD; Zirconium; Electron microprobe analysis; Transition elements; Phase equilibria; Tin; Titanium; Solidus
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2008.05.085

By the methods of DTA, X-ray diffraction, metallography and EPMA, phase equilibria in the Ti–Zr–Sn system at <40 at.% Sn were studied. The partial liquidus and solidus projections, and the melting diagram (solidus + liquidus) were constructed. The liquidus surface is characterized by the presence of primary crystallization regions of (βTi) (β), (Ti 3Sn) (α 2) and (Ti,Zr) 5Sn 3 (5/3) phases. The solidus surface is characterized by the presence of two three-phase fields, β + α 2 + 5/3 and α 2 + (Ti 2Sn)(2/1) + 5/3. The first one results from an invariant four-phase equilibrium L U + α 2 ↔ β + 5/3 taking place at 1510 ± 10 °C. The invariant point U is located at the composition ∼53Ti–30Zr–17Sn. The second three-phase region results from an equilibrium at 1515 °C with participation of L + α 2 + 5/3 + 2/1 phases. The character of the equilibrium is not determined. Two invariant three-phase equilibria were found, L e 1 ↔ α 2 + 5 / 3 at 1600–1650 °C and L e 4 ↔ β + 5 / 3 at 1423 °C.