Abstract

MANZO-GARRIDO, Hernán; HABERLE, Patricio  and  HENAO, Héctor. Experimental determination of phase equilibrium in Ti-Nb-Mn system at temperatures between 1150 ° C and 1200 ° C. Dyna rev.fac.nac.minas [online]. 2019, vol.86, n.209, pp.304-311. ISSN 0012-7353.  https://doi.org/10.15446/dyna.v86n209.68055.

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 TiMn 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 TiMn and TiMn2 coexist in equilibrium, this is not presented by the simulations. At 1200°C there is coexistence of liquid phase, TiMn and TiMn2.

Keywords : titanium alloys; biomedical materials; phase diagrams; Ti-Nb-Mn system; Thermo-Calc®.

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