Experimental Investigation of Phase Equilibria in the Ti-Al-Zr System at 1000-1300 degrees C

Four partial isothermal sections of the Ti-Al-Zr system up to 60 at. % Al and 30 at. % Zr were experimentally established between 1000-1300 degrees C. Six heat-treated alloys were analysed by scanning electron microscopy, transmission electron microscopy, electron probe microanalysis, conventional and high-energy X-ray diffraction, and differential thermal analysis. Phase equilibria were determined between B2-ordered (beta(0)), beta Ti,Zr, alpha Ti, Ti3Al, TiAl, and ZrAl2.