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Thermodynamic assessment of the Mg–Nd system

Cuiping Guo and Zhenmin Du

Abstract

The Mg–Nd system was critically assessed by means of the CALPHAD technique. The solution phases (liquid, body-centered cubic, double hexagonal close-packed and hexagonal close-packed) were modeled with the Redlich–Kister equation. The intermetallic compounds Mg41Nd5, Mg3Nd and MgNd, which have a homogeneity range, were treated as the formulae (Mg, Nd)41(Mg, Nd)5, Mg3(Mg, Nd) and Mg(Mg, Nd) by a two-sublattice model with Mg and Nd or Mg on the first sublattice, and Mg and Nd on the second one, respectively. The compound Mg2Nd was treated as a stoichiometric compound. A set of self-consistent thermodynamic parameters of the Mg–Nd system was obtained.


2 Correspondence address: Professor Zhenmin Du, Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, P.R. China, Tel./Fax: +861062333772. E-mail:

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Received: 2005-06-09
Accepted: 2005-09-10
Published Online: 2013-03-01
Published in Print: 2006-02-01

© 2006, Carl Hanser Verlag, München