Abstract
Constitution of the Mg-rich part of the ternary phase diagram of Mg with two rare-earth metals, Mg-Dy-Sm was experimentally investigated for the first time using optical and scanning electron microscopy (SEM) with electron probe microanalysis (EPMA), x-ray diffraction and differential thermal analysis. In equilibrium with Mg solid solution only two solid phases were found, each of them being the riches by Mg compound in the respective binary systems, Mg24Dy5 and Mg41Sm5. Each of these compounds can also dissolve some other rare-earth metal. There is significant combine solubility of Dy and Sm in Mg solid solution, which decreases with lowering temperature. In the studied part of the Mg-Dy-Sm system one invariant four-phase equilibrium of L + (Mg24Dy5) ⇆ (Mg) + (Mg41Sm5) exists, which takes place at 535 °C. A number of isothermal partial sections and one temperature-composition section of the Mg-Dy-Sm phase diagram were constructed.
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References
B.L. Mordike and T. Ebert, Magnesium: Properties-Applications-Potential, Mater. Sci. Eng., A, 2001, 302, p 37-45
E. Aghion and D.Elizer, Eds., Magnesium Alloys. Science, Technology and Applications ,Published by the Israeli Consortium for the Development of Magnesium Technology. S.Neaman Institute, Technion City, Haifa 3200, 2004.
S. Zhu, M.A. Easton, T.B. Abbott, J.F. Nie, M.S. Dargusch, N. Hort, and M.A. Gidson, Evaluation of Magnesium Die-Casting Alloys for Elevated Temperature Applications: Microstructure, Tensile Properties and Creep Resistance, Metall. Mater. Trans. A, 2015, 46A, p 3543-3554
A. Luo and M.O. Pekguleryuz, Cast Magnesium Alloys for Elevated Temperature Applications, J. Mater. Sci., 1994, 29, p 5259-5271
C.J. Bettles and M.A. Gibson, Curent Wrought Magnesium Alloys: Strength and Weakness. JOM (Previously Journal of Metals), 2005, p 46-49.
Z. Yang, J.P. Li, J.X. Zhang, G.W. Lorimer, and J. Robson, Review on Research and Development of Magnesium Alloys, Acta Metall. Sin. (Engl. Lett.), 2008, 21(5), p 313-328.
L.L. Rokhlin, Magnesium Alloys Containing Rare Earth Metals, Taylor & Francis, 2003.
X.B. Liu, R.S. Chen, and E.H. Han, Effects of Ageing Treatment on Microstructures and Properties of Mg-Gd-Y-Zr Alloys with and Without Zn Addition, J. Alloy. Compd., 2008, 465, p 232-238
P.J. Apps, H. Krimzadeh, J.F. King, and G.W. Lorimer, Precipitastion Reactions in Magnesium-Rare Earth Alloys Containing Yttrium, Gadolinium or Dysprosium, Scr. Mater., 2003, 48, p 1023-1028
L. Zhang, J. Zhang, Z. Leng, S. Liu, Q. Yang, R. Wu, and M. Zhang, Microstructure and Mechanical Properties of High Performance Mg-Y-Er-Zn Alloys, Mater. Des., 2014, 54, p 256-263
V. Neubert, I. Stulikova, B. Smola, B.L. Mordike, M. Vlach, A. Bakkar, and J. Pelkova, Thermal Stability and Corrosion Behavior of Mg-Y-Nd and Mg-Tb-Nd Alloys, Mater. Sci. Eng., A, 2007, A462, p 329-333
L. Yang, Y. Huang, F. Feyerabend, R. Willumeit, C. Mendis, K.U. Kainer, and N. Hort, Microstructure, Mechanical and Corrosion Properties of Mg-Dy-Gd-Zr Alloys for Medical Applications, Acta Biomater., 2013, 9, p 8499-8508
Binary Phase Diagrams, 2nd ed., T.B. Massalski (Editor-in-chief), ASM International, Materials Park, OH, 1990.
L.L. Rokhlin and L.P. Deeva, Magnesium Alloys with Dysprosium, Technolog. Legkich Splavov, 1976, No. 12, p 83-84 (in Russian).
A. Saccone, S. Delfino, G. Brozone, and R. Ferro, The Samarium-Magnesium System: A Phase Diagram, J. Less-Common Met., 1989, 154(1), p 47-60
L.L. Rokhlin, E.M. Padezhnova, and L.S.Guzey, Investigation of the Samarium Solubility in the Mg-Base Solid Solution. Izv. AN SSSR, Metally, 1976, No. 6, p 204-208 (in Russian).
J.F. Smith, D.M. Bailey, D.B. Novotny, and J.E. Davison, Thermodynamics of Formation of Yttrium-Magnesium Intermediate Phases, Acta Metall., 1965, 13(8), p 889-895
Z.A. Sviderskaya and E.M. Padezhnova, Solubility of Neodimium and Yttriumin in Solid Magnesium. Izv. AN SSSR, Metally, 1971, No. 6, p. 200-204 (in Russian).
R. Schmid-Fetzer, N. Bochvar, and R. Stroug, Magnesium-Samarium-Yttrium. Ternary Alloys. A CmprehensiveCompedium of Evaluated Constitutional Data and Phase Diagrams. V.18, G. Effenberg, F. Aldinger, and P. Rogl., Eds., Published by MSI, Stuttgart (Federal Republic of Germany), 2001, p 629-641.
E.M. Padezhnova, T.V. Dobatkina, and E.V. Muratova, About the Mg-Y-La Phase Diagram in the Mg-Rich Area. Izv. AN SSSR, Metally, 1983, No. 4, p 194-197, in Russian.
Acknowledgment
The work was supported by the Russian Foundation for Basic Research (Project No. 15-03-01351-A). The authors gratefully appreciate the financial support of the Ministry of Education and Science of the Russian Federation provided in the framework of the Program aimed to increase the competitiveness of the National University of Science and Technology “MISIS”.
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Lukyanova, E.A., Rokhlin, L.L., Dobatkina, T.V. et al. Investigation of the Mg-Rich Part of the Mg-Dy-Sm Phase Diagram. J. Phase Equilib. Diffus. 37, 664–671 (2016). https://doi.org/10.1007/s11669-016-0493-8
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DOI: https://doi.org/10.1007/s11669-016-0493-8