Phase equilibria in solid Mg-Rich Mg-Sm-Tb alloys

The structure of Mg-rich Mg-Sm-Tb alloys with samarium and terbium contents up to 30 at % each is studied by metallography, electron microprobe analysis, and electrical resistivity measurements. The magnesium-based solid solution is found to be in equilibrium only with the Mg 41 Sm 5 and Mg 24 Tb 5...

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Bibliographic Details
Published in:Russian metallurgy Metally 2010-07, Vol.2010 (7), p.663-668
Main Authors: Rokhlin, L. L., Dobatkina, T. V., Luk’yanova, E. A., Korol’kova, I. G., Polikanova, A. S.
Format: Article
Language:English
Subjects:
Alloys
Chemistry and Materials Science
Composing
Magnesium
Magnesium base alloys
Materials Science
Metallic Materials
Samarium
Solid solutions
Solubility
Terbium
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Summary:The structure of Mg-rich Mg-Sm-Tb alloys with samarium and terbium contents up to 30 at % each is studied by metallography, electron microprobe analysis, and electrical resistivity measurements. The magnesium-based solid solution is found to be in equilibrium only with the Mg 41 Sm 5 and Mg 24 Tb 5 phases belonging to the Mg-Sm and Mg-Tb binary systems composing the ternary system, respectively. The individual and total samarium and terbium solubilities in a magnesium-based solid solution at 500 and 300°C are determined. The terbium and samarium solubilities in the Mg 41 Sm 5 and Mg 24 Tb 5 phases, respectively, are also determined. Partial isothermal sections at 500 and 300°C of the Mg-Sm-Tb phase diagram in the Mg- rich region are constructed.
ISSN:0036-0295
1555-6255
1531-8648
DOI:10.1134/S0036029510070141