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Experimental studies and thermodynamic simulation of phase transformations in high Nb containing ¿-TiAl based alloys

Journal Article


Abstract


  • Solid-state phase transformations and phase transition temperatures in Ti-45at.% Al and Ti-45 at.% Al-(5, 7.5, 10) at.% Nb alloys were analyzed experimentally and compared to thermodynamic calculations. Results from scanning electron microscopy, high-energy and conventional X-ray diffraction as well as differential scanning calorimetry were used for the characterization of the prevailing phases and phase transformations. For the prediction of phase stabilities and phase transition temperatures, thermodynamic calculations using the CALPHAD method were conducted. In order to achieve better agreement between calculated and experimental results, a commercially available database was modified using our own results from thermo-physical measurements and annealing treatments. © carl hanser verlag gmbh & co. Kg.

Publication Date


  • 2007

Citation


  • Chladil, H. F., Clemens, H., Zickler, G. A., Takeyama, M., Kozeschnik, E., Bartels, A., . . . Liss, K. D. (2007). Experimental studies and thermodynamic simulation of phase transformations in high Nb containing ¿-TiAl based alloys. International Journal of Materials Research, 98(11), 1131-1137. doi:10.3139/146.101569

Scopus Eid


  • 2-s2.0-37149012560

Start Page


  • 1131

End Page


  • 1137

Volume


  • 98

Issue


  • 11

Abstract


  • Solid-state phase transformations and phase transition temperatures in Ti-45at.% Al and Ti-45 at.% Al-(5, 7.5, 10) at.% Nb alloys were analyzed experimentally and compared to thermodynamic calculations. Results from scanning electron microscopy, high-energy and conventional X-ray diffraction as well as differential scanning calorimetry were used for the characterization of the prevailing phases and phase transformations. For the prediction of phase stabilities and phase transition temperatures, thermodynamic calculations using the CALPHAD method were conducted. In order to achieve better agreement between calculated and experimental results, a commercially available database was modified using our own results from thermo-physical measurements and annealing treatments. © carl hanser verlag gmbh & co. Kg.

Publication Date


  • 2007

Citation


  • Chladil, H. F., Clemens, H., Zickler, G. A., Takeyama, M., Kozeschnik, E., Bartels, A., . . . Liss, K. D. (2007). Experimental studies and thermodynamic simulation of phase transformations in high Nb containing ¿-TiAl based alloys. International Journal of Materials Research, 98(11), 1131-1137. doi:10.3139/146.101569

Scopus Eid


  • 2-s2.0-37149012560

Start Page


  • 1131

End Page


  • 1137

Volume


  • 98

Issue


  • 11