The phase stability in the Fe-B binary system: Comparison between the interstitial and substitutional models

被引：19

作者：

Abdellah, Z. Nait ^{[1
]}

Chegroune, R. ^{[2
]}

Keddam, M. ^{[2
]}

Bouarour, B. ^{[2
]}

Haddour, L. ^{[2
]}

Elias, A. ^{[1
]}

机构：

[1] Faculté des Sciences, Département de Chimie, Université Mouloud Mammeri, Algeria

[2] Laboratoire de Technologie des Matériaux, Département de S.D.M, Faculté de Génie Mécanique et Génie des Procédés, 16111, El-Alia, Bab-Ezzouar, Alger, Algeria

来源：

Defect and Diffusion Forum | 2012年 / 322卷

关键词：

Chemical stability - Iron compounds - Phase stability - Boron compounds - Thermodynamic stability;

D O I：

10.4028/www.scientific.net/DDF.322.1

中图分类号：

学科分类号：

摘要：

In the present work, a thermodynamic study was carried out in order to analyze the thermodynamic stability of the α - Fe and γ - Fe phases in equilibrium with the Fe2B phase using the calculation of phase diagrams (Calphad) formalism. The two phases α - Fe and γ - Fe are modelled as substitutional and interstitial solid solutions of boron. The expressions of the chemical potentials of B and Fe are derived in both phases to perform the thermodynamic calculations. A comparison is made between the results provided by the substitutional and interstitial models and good agreement is observed between these two models. © 2012 Trans Tech Publications, Switzerland.

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页码：1 / 9