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Determination of the Mg-Rich Phase Boundary of the Binary Mg-Nd Phase Diagram by Means of Atom Probe Tomography

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Abstract

The present paper relates the investigation of the Mg-rich side of the binary Mg-Nd phase diagram by means of Atom Probe Tomography (APT). The solid solubility of Nd in Mg at the temperatures 400, 480, 520 °C has been measured. The results of the current investigation demonstrate that the solid solubility of Nd in Mg is much larger than is usually supposed and presented in more recent Mg-Nd phase diagrams. The data presented in this work can be used for further thermodynamic calculations in order to interpolate the phase boundary between temperature points.

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Notes

  1. Values of molar masses of magnesium and neodymium used for recalculation of wt.% to at.% are M Mg = 0.0243 kg/mol and M Nd = 0.1442 kg/mol respectively.

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Acknowledgments

Jörn Fiedler from the University of Clausthal is gratefully acknowledged for the elaboration of the alloy. The authors also would like to thank Charly Vaudolon and Béatrice Foulon for the great help in specimen’s preparation.

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  1. Groupe de Physique des Matériaux, UMR CNRS 6634, Université de Rouen, BP 12, Avenue de l’Université, 76801, Saint Etienne de Rouvray, France

    V. Kopp, W. Lefebvre & C. Pareige

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  1. V. Kopp
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  2. W. Lefebvre
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  3. C. Pareige
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Correspondence to W. Lefebvre.

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Kopp, V., Lefebvre, W. & Pareige, C. Determination of the Mg-Rich Phase Boundary of the Binary Mg-Nd Phase Diagram by Means of Atom Probe Tomography. J. Phase Equilib. Diffus. 32, 298–301 (2011). https://doi.org/10.1007/s11669-011-9882-1

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  • DOI: https://doi.org/10.1007/s11669-011-9882-1

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