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On The Influence of Nb on the Transition Temperatures of Titanium Aluminides

  • Harald F. Chladil (a1), Helmut Clemens (a2), Masao Takeyama (a3), Ernst Kozeschnik (a4), Arno Bartels (a5), Rainer Gerling (a6) and Sascha Kremmer (a7)...

Abstract

Phase transformations and phase transition temperatures in several Ti-45Al and Ti-45Al-(5-10)Nb (at%) alloys were investigated experimentally and compared to thermodynamic calculation. The present study combines scanning electron microscopy, high-energy and conventional X-ray diffraction as well as differential scanning calorimetry for the characterization of the prevailing phases and phase transformations. Thermodynamic simulation based on the CALPHAD method was used to predict phase stabilities. Modifications of a commercial available database, based on the thermo-physical measurements and long-term annealing treatments, were introduced in order to achieve better agreement between calculated and experimental results.

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Keywords

On The Influence of Nb on the Transition Temperatures of Titanium Aluminides

  • Harald F. Chladil (a1), Helmut Clemens (a2), Masao Takeyama (a3), Ernst Kozeschnik (a4), Arno Bartels (a5), Rainer Gerling (a6) and Sascha Kremmer (a7)...

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