Calculation of Phase Composition of α- and Near-α- Titanium Alloys

The effect of chemical composition of Ti-0.4 Al α-titanium alloy (PT-1M alloy) on the phase transformation temperatures up to melting temperature has been investigated using ThermoCalc software. The possibility of appearance of Ti2N nitride, Tix(CN)-type carbonitride, and Ti2Fe-type intermetallic in the alloy structure in equilibrium state has been proved by thermodynamic calculations. It has been proposed the so-called aluminum equivalent (Aleq) for PT-1M alloy to analyze the effect of chemical composition on the phase transformation temperatures change. The following equivalents have been suggested: Al eq Tβ for β ↔ ( β + α ) − transformation, Al eq T l i q for L ↔ β − transformation, and Al eq Tsol for ( L + β ) ↔ β − transformation. It has been shown the linear correlation between the characteristic temperatures of phase transformations in the investigated alloy and the proposed aluminum equivalents.

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Calculation of Phase Composition of α- and Near-α- Titanium Alloys

Abstract: The thermodynamic calculation of the phase composition of the PT-1M, PT-7M, Ti-3Al-2.5V alloys versus temperature is performed using the Thermo-Calc software. The comparison of calculation results with the available experimental data is made.

Cited by 2 publications

References 11 publications

Effect of the Temperature and Rate Parameters of Hot Deformation on the Mechanical Behavior of Forged Titanium Alloy VT14 Under Compression and Tension

Effect of the Temperature and Rate Parameters of Hot Deformation on the Mechanical Behavior of Forged Titanium Alloy VT14 Under Compression and Tension

ThermoCalc Modelling of the Effect of Chemical Composition on the Phase Transformations Temperatures of Ti-0.4Al Alloy

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