Open AccessThermoCalc Modelling of the Effect of Chemical Composition on the Phase Transformations Temperatures of Ti-0.4Al Alloy
Author(s) -
А. Г. Илларионов,
А. С. Ушакова,
F. V. Vodolazsky
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/969/1/012029
Subject(s) - materials science , algorithm , computer science
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 Ti 2 N nitride, Ti x (CN)-type carbonitride, and Ti 2 Fe-type intermetallic in the alloy structure in equilibrium state has been proved by thermodynamic calculations. It has been proposed the so-called aluminum equivalent (Al eq ) 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.