Abstract
The Ti-25Ta-25Nb alloy was produced in a levitation induction melting furnace, under argon protective atmosphere. The obtained ingots were two times remelted, in order to obtain a high degree of chemical homogeneity. The alloy was then thermo-mechanically processed by a first cold-rolling and a recrystallization treatment in a heat treatment oven, followed by a second cold-rolling, to achieve final strips of 141 μm thickness. Using a PanalyticalX’Pert PRO MRD diffractometer, the as-cast specimens and the final cold processed specimens were XRD characterized, so that the phase structure and phase characteristics could be determined. The position of each diffraction peak, the intensity and the peak broadening parameters were determined using the PEAKFIT v4.11 software package. Finally the structural features of Ti-25Ta-25Nb alloy in the as-cast state and thermo-mechanically processed state were shown and discussed.
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