Calculation of the Equilibrium Phase Diagram of Fe-Ni Alloy System by the ESTPHAD Method

Abstract:

Including detailed information of equilibrium phase diagrams (EPhD) is is one of the necessary features in phase transformation simulations. It is important for a simulation to provide a simple but accurate EPhD calculation method which is based on the knowledge of the phase boundary lines in the EPhDs as an mathematical function. A simple, fast and iteration free approximate calculation method has been developed earlier (ESTPHAD – Estimated Phase Diagrams). The input data may be either experimental values, or a data field calculated by CALPHAD, or digitized data from the graphical representation of measured and published EPhDs . By this method important parameters such as the beginning and ending temperatures of solidification or solid state transformations can be determined for each phase. The partition ratios as a function of the concentration can be calculated as well. In this study ESTPHAD is used to estimate the EPhD of binary Fe-Ni system.

• Periodical: Materials Science Forum (Volume 508)
• Pages: 609-614
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.508.609
• Online since: March 2006
• Authors: Zsuzsanna Kövér, András Roósz
• Keywords: EPhD, ESTPHAD, Fe-Ni Alloy System, Phase Diagram

References

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DOI: 10.4028/www.scientific.net/msf.508.609

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