Фазовая диаграмма системы Gd-Sc

К оглавлению: Другие диаграммы (Others phase diargams)


Gd-Sc (Gadolinium-Scandium) K.A. Gschneidner, Jr. and F.W. Calderwood The assessed phase diagram for the Gd-Sc system is based primarily on the work of [64Bea]. The melting point and the b(bcc) = a(cph) transformation temperatures of Sc were increased 2 C to agree with the accepted values. The melting temperature of Gd was also raised 3 C. The solidus was established by [64Bea] using an optical pyrometer method. Because no data were obtained on the liquidus, it is presented as a dashed line. The transformation temperatures for the alloys were established by differential thermal analysis. Complete solubility exists in all three single- phase regions the liquid state, the bcc high-temperature region, and the cph region that exists at lower temperatures. [79Shi] attempted to use the Kaufman method to calculate the Gd-Sc phase diagram, but the results were not satisfactory. 64Bea: B.J. Beaudry and A.H. Daane, J. Less-Common Met., 6, 322 (1964). 79Shi: G.J. Shiflet, J.K.Lee, and H.I. Aaronson, Calphad, 3, 129 (1979). Published in Bull. Alloy Phase Diagrams, 4(2), Sep 1983. Complete evaluation contains 2 figures and 9 references. 1