Thermodynamic and experimental study of Ti-Ag-Cu alloys

M. Paulasto, F.J.J. Loo, van, J. Kivilahti

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Abstract

Phase equilibria in the ternary TiAgCu system have been studied thermodynamically and experimentally at various temperatures. The thermodynamic analysis was performed by combining the most recent data on the binary AgCu, TiAg and TiCu systems and experimental information obtained by the diffusion couple technique. The eutectic and three non-eutectic binary AgCu alloys were melted and annealed in evacuated Ti ampoules at temperatures of 900, 950 and 1000 °C for various times and subsequently quenched in water. Both the calculations and the experimental results confirm that in the ternary system there is a miscibility gap, which divides the liquid phase into solutions of low and high Ti content. Furthermore, no ternary compounds were found. Several isothermal sections and the activity of titanium as a function of the copper-to-silver ratio and temperature are presented.
Original languageEnglish
Pages (from-to)136-141
JournalJournal of Alloys and Compounds
Volume220
DOIs
Publication statusPublished - 1995

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