Thermodynamic description of the Mn-Si system: an experimental and theoretical work

Abstract : Differential thermal analyses are performed on Mn-Si alloys with xSi = 0.6206 to 0.6364. Existence of a solid solution on the MnSix (with x around 0.63) phase is evidenced. Based on a careful review of the literature, the Mn-Si system is modeled using the Calphad method. The liquid, cbcc_a12, cub_a13, fcc_a1 and bcc_a2 phases are modeled as substitution solutions using the Redlich-Kister formalism. Mn3Si, Mn5Si3 and MnSi are treated as stoichiometric compounds and the stoichiometric variations of R-Mn6Si, nu-Mn9Si2 and MnSix are respectively described as (Mn)0.49(Mn,Si)0.36(Mn,Si,VA)0.15, (Mn)0.613(Mn,Si)0.215(Mn,Si)0.108(Si)0.064 and (Mn)0.146(Mn,VA)0.220(Mn,Si)0.244(Si)0.390. The results are in good agreement with the set of experimental data which is carefully selected. Finally, a few experimental data which could be checked are suggested.
Type de document :
Article dans une revue
Journal of Alloys and Compounds, Elsevier, 2014, 615, pp.693-702. 〈10.1016/j.jallcom.2014.06.202〉
Domaine :
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https://hal.archives-ouvertes.fr/hal-01063529
Contributeur : Philippe Jund <>
Soumis le : vendredi 12 septembre 2014 - 12:12:09
Dernière modification le : lundi 14 mai 2018 - 17:53:39

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Alexandre Berche, Elodie Ruiz-Theron, Jean-Claude Tedenac, Rose-Marie Ayral, Florence Rouessac, et al.. Thermodynamic description of the Mn-Si system: an experimental and theoretical work. Journal of Alloys and Compounds, Elsevier, 2014, 615, pp.693-702. 〈10.1016/j.jallcom.2014.06.202〉. 〈hal-01063529〉

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