PHASE-RELATIONS IN THE AG-FE-TI SYSTEM AT 1123 K

Phase equilibria in the Ag-Fe-Ti system at 1123 K were determined by u sing polyphase diffusion couples and equilibrated alloys. The experime ntal observations are in agreement with a thermodynamic evaluation per formed on this system. No ternary phases are present on the Ag-Fe-Ti i sotherm at 1123 K. The solubility of iron in the binary intermetallic compounds Ti2Ag and TiAg as well as the solubility of silver in Fe2Ti are negligible. The maximum silver content in FeTi was estimated as ap proximate to 0.5 at.%, while nearly 6 at.% of silver can be dissolved in the beta-Ti(Fe) based solid solution at this temperature.