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Phase Equilibria of the Mg-Gd-Ce System at 500 °C

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Abstract

The phase equilibria of the Mg-Gd-Ce system at 500 °C were investigated by means of the electron probe microanalysis (EPMA) and x-ray diffraction (XRD) on equilibrated alloys. The existence of the so-called normal tetragonal CeMg12(I) and long-range ordered CeMg12(II) was confirmed in the present work. The following five three-phase equilibria were well determined: (1) (Mg) + CeMg12(I) + Ce5Mg41, (2) (Mg) + Ce5Mg41 + GdMg5, (3) Ce5Mg41 + GdMg5 + (Ce,Gd)Mg3, (4) (Ce,Gd)Mg3 + GdMg2 + (Ce,Gd)Mg and (5) (Ce,Gd)Mg + (δCe) + (βCe). The solubility of Ce in GdMg5 and in GdMg2 was measured to be 7.8 and 8.7 at.% Ce, respectively. The solubility of Gd in CeMg12(I), in Ce5Mg41 and in (δCe) were measured to be 1.0, 4.6 and 2.4 at.% Gd, respectively. Two continuous series of solid solutions form between GdMg3 and CeMg3, and between GdMg and CeMg. The overall isothermal section at 500 °C was constructed based on the present data with a few extrapolations.

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References

  1. B. Smola, I. Stulíková, J. Pelcová, and B.L. Mordike, Significance of Stable and Metastable Phases in High Temperature Creep Resistant Magnesium-Rare Earth Base Alloys, J. Alloys Compd., 2004, 378, p 196-201

    Article  Google Scholar 

  2. S. Tekumalla, S. Seetharaman, A. Almajid, and M. Gupta, Mechanical Properties of Magnesium-Rare Earth Alloy Systems: A Review, Metals, 2015, 5(1), p p1-39

    Article  Google Scholar 

  3. S.M. He, X.Q. Zeng, L.M. Peng, X. Gao, J.F. Nie, and W.J. Ding, Microstructure and Strengthening Mechanism of High Strength Mg-10Gd-2Y-0.5Zr Alloy, J. Alloys Compd., 2007, 427, p 316-323

    Article  Google Scholar 

  4. Z.J. Yu, C. Xu, J. Meng, and S. Kamado, Microstructure Evolution and Mechanical Properties of a High Strength Mg-11.7Gd-4.9Y-0.3Zr (wt.%) Alloy Prepared by Pre-deformation Annealing, Hot Extrusion and Ageing, Mater. Sci. Eng. A, 2017, 703, p 348-358

    Article  Google Scholar 

  5. P. Vostry, B. Smola, I.F. von Buch, and B.L. Mordike, Microstructure Evolution in Isochronally Heat Treated Mg-Gd Alloys, Phys. Status Solidi A, 1999, 175, p 491-500

    Article  ADS  Google Scholar 

  6. B.S. Li, K. Guan, Q. Yang, X.D. Niu, D.D. Zhang, Z.J. Yu, X.H. Zhang, Z.M. Tang, and J. Meng, Effects of 0.5 wt.% Ce Addition on Microstructures and Mechanical Properties of a Wrought Mg-8Gd-1.2Zn-0.5Zr Alloy, J. Alloys Compd., 2018, 763, p 120-133

    Article  Google Scholar 

  7. A.A. Nayeb-Hashemi and J.B. Clark, Phase Diagrams of Binary Magnesium Alloys, A.A. Nayeb-Hashemi and J.B. Clark, Ed., ASM International, Materials Park (OH), 1988, p 128-134

    Google Scholar 

  8. A.A. Nayeb-Hashemi and J.B. Clark, The Ce − Mg (Cerium-Magnesium) System, Bull. Alloy Phase Diagram, 1988, 9(2), p 162-172

    Article  Google Scholar 

  9. K.A. Gschneidner and F.W. Calderwood, The Ce-Gd (Cerium-Gadolinium) system, Bull. Alloy Phase Diagram, 1982, 3(2), p 185-187

    Article  Google Scholar 

  10. X.P. Wu, C.R. Li, J.X. Zheng, Y.X. Ruan, C.P. Guo, Z.M. Du, B. Chen, and Y.J. Wu, Thermodynamic Re-assessment of the Mg-Gd Binary System Coupling the Microstructure Evolution During Ageing Process, CALPHAD, 2020, 68, p 101712

    Article  Google Scholar 

  11. H. Zhang, Y. Wang, S.L. Shang, L.Q. Chen, and Z.K. Liu, Thermodynamic Modeling of Mg-Ca-Ce System by Combining First-Principles and CALPHAD Method, J. Alloys Compd., 2008, 463, p 294-301

    Article  Google Scholar 

  12. J. Gröbner and R. Schmid-Fetzer, Thermodynamic Modeling of the Mg-Ce-Gd-Y System, Scr. Mater., 2010, 63, p 674-679

    Article  Google Scholar 

  13. F. Zhang, H.H. Xu, Y. Du, R. Schmid-Fetzer, and T. Zhou, Phase Equilibria of the Mg-La-Nd System at 500°C, J. Alloys Compd., 2014, 585, p 384-392

    Article  Google Scholar 

  14. H.H. Xu, Y.B. Huang, N. Li, J. Li, and T. Zhou, Solid-State Phase Equilibria of the Mg-Gd-Nd System at 500°C, J. Phase Equilib. Diffus., 2015, 36(2), p 110-119

    Article  Google Scholar 

  15. H.H. Xu, F. Zhang, Y.B. Huang, N. Li, J. Li, and T. Zhou, Phase Equilibria at 500°C of the Mg-Gd-La System, J. Phase Equilib. Diffus., 2015, 36(5), p 445-452

    Article  Google Scholar 

  16. E.M. Savitskii, V.F. Terehova, I.V. Burov and O.P. Naumkin, Study of rare rarth crystals and alloys, in Proceedings of the Conference Rare Earth Research, 4th, 1965, p 301-319.

  17. I.R. Harris, C.C. Koch, and G.V. Raynor, The room-temperature lattice spacings of some intra rare-earth binary systems, J. Less-Common Met., 1966, 11, p 436-454

    Article  Google Scholar 

  18. D.H. Wood and E.M. Cramer, Phase Relations in the Magnesium Rich Portion of the Cerium-Magnesium System, J. Less-Common Met., 1965, 9, p 321-337

    Article  Google Scholar 

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Acknowledgments

This work is supported by the Sino-German Center for Promotion of Science (Grant No. GZ591). Thanks to Mr. T.S. Jia for his XRD examination.

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Authors and Affiliations

  1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, People’s Republic of China

    Tao Zhou, Honghui Xu & Peisheng Wang

  2. Thermo-Calc Software AB, Råsundavägen 18, Solna, 16967, Stockholm, Sweden

    Hai-Lin Chen

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  1. Tao Zhou
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Correspondence to Honghui Xu.

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Zhou, T., Xu, H., Chen, HL. et al. Phase Equilibria of the Mg-Gd-Ce System at 500 °C. J. Phase Equilib. Diffus. 42, 142–149 (2021). https://doi.org/10.1007/s11669-020-00856-8

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