experimental determination of phase equilibrium in Ti-Nb-Mn system at temperatures between 1150 ° c and 1200 ° c

Abstract

The aging and increase of the world population entails a progressive use of biomedical implants. Titanium base alloys, have been widely applied. Ti-Mn, Ti-Nb, Ti-Nb-Mn and Ti-Ta-Nb-Mn alloys have been postulates with potential biomedical use for the next generations. Information available from the Ti-Nb-Mn equilibrium system is not available in literature. The present work contributes in the experimental study at 1150 ° C and 1200 ° C isotherms of the Ti-Nb-Mn ternary diagram, established by scanning electron microscopy techniques and measured by energy dispersion spectroscopy and compared with isothermal sections simulated by Thermo-Calc®. There are differences between ternary and binary simulations. The experiments show the appearance of βTiMn with difference in reported and simulated. Ternary diagrams areas at 1150 ° C and 1200 ° C near the experimentally obtained liquid compositions are presented in this paper. At 1150°C the phase βTiMn and TiMn2 coexist in equilibrium, this is not presented by the simulations. At 1200°C there is coexistence of liquid phase, βTiMn and TiMn2.