Theoretical Analysis of Binary Fe-N Phase Diagrams at Low Temperatures

Abstract

Abstract: he binary Fe-N phase diagrams at the low temperatures were calculated by using a two-sublattice version of the Compound Energy Model (CEM). The phase
equilibrium of α-Fe(N) and γ’-Fe₄N, and γ-Fe₄N and ε-Fe₂N_1-x was respectively obtained in the temperature range of 25～350 ℃. The α-Fe(N), γ’-Fe₄N, and
ε-Fe₂N_1-x phases are thermodynamically stable at the low temperatures. The calculated binary Fe-N phase diagram by using the Guillermet
and Du’s parameters describing the thermodynamic properties of Fe-N phases was confirmed from the available experimental data at the low temperatures.

Key words: binary Fe-N phase diagram, thermodynamics, model

CLC Number:

LEI Ming-Kai,WANG Xing-Jun. Theoretical Analysis of Binary Fe-N Phase Diagrams at Low Temperatures[J]. Journal of Inorganic Materials.

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Theoretical Analysis of Binary Fe-N Phase Diagrams at Low Temperatures

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