Accurate Calculation of the Non-Variant Points of Equilibrium Phase Diagrams by Using the ESTPHAD Method

Article Preview

Abstract:

Certain phase transitions take place at a given temperature in the equilibrium phase diagrams, the values of their temperatures can exactly be measured so it is an essential task to calculate these values by a high accuracy. New parameters were introduced into the ESTPHAD equation for calculating the so-called non-variant points. By using the ESTPHAD method, the accuracy of calculations are compared to the data used for the calculations so the exact calculation of the temperatures of non-variant points are defined as compared to the data used for the calculations.

You might also be interested in these eBooks

Info:

Periodical:

Pages:

448-454

Citation:

Online since:

November 2012

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2013 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] A. Roosz, P. Barkóczy and J. Farkas: The ESTPHAD: a Simple Tool for the Simulation of Solidification of Multicomponent Alloys, SP'07 Proceedings of the 5th Decennial International Conference on Solidification Processing, Sheffield, July 2007, pp.365-368.

Google Scholar

[2] A. Roósz, G. Kaptay, J. Farkas, Thermodynamics-Based Semi Empirical Description of Liquidus Surface and Partition Coefficients in Ternary Al-Mg-Si Alloy, Materials Science Forum, 414-415 (2003) pp.323-328.

DOI: 10.4028/www.scientific.net/msf.414-415.323

Google Scholar

[3] T. Mende, A. Roósz, Calculation of the immiscibility gap by ESTPHAD method, Materials Science Forum, 659 (2010) pp.423-428.

DOI: 10.4028/www.scientific.net/msf.659.423

Google Scholar

[4] J. Miettinen, Thermodynamic description of the Cu–Ni–Zn system above 600 °C, Computer Coupling of Phase Diagrams and Thermochemistry 27 (2003) 263–274.

DOI: 10.1016/j.calphad.2003.09.002

Google Scholar

[5] H. Bo, S. Jin, L.G. Zhang, X.M. Chen, H.M. Chen, L.B. Liu, F. Zheng, Z.P. Jin, Thermodynamic assessment of Al–Ce–Cu system, Journal of Alloys and Compounds 484 (2009) 286–295.

DOI: 10.1016/j.jallcom.2009.04.083

Google Scholar

[6] American Society for Metals: Metals Handbook, 8th Edition, Metallography, Structures and Phase Diagrams (1973).

Google Scholar

[7] www. calphad. com.

Google Scholar

[8] E.M. Levin, C.R. Robins, H.F. McMurdie, Phase Diagrams for Ceramists, The American Ceramic Society, (1964).

Google Scholar

[9] T.B. Massalski, J.L. Murray, L.H. Bennett, H. Baker, Binary Alloy Phase Diagrams, Vol. 1, (1987), American Society for Metals.

Google Scholar

[10] G. Kaptay, A Calphad-compatible method to calculate liquid/liquid interfacial energies in immiscible metallic systems, Computer Coupling of Phase Diagrams and Thermochemistry 32 (2008) 338–352.

DOI: 10.1016/j.calphad.2007.10.002

Google Scholar