Фазовая диаграмма системы Dy-Er

К оглавлению: Другие диаграммы (Others phase diargams)


Dy-Er (Dysprosium-Erbium) K.A. Gschneidner, Jr. and F.W. Calderwood The assessed phase diagram for the Dy-Er system is based on the work of [73Spe] . The melting points of the alloys decrease almost linearly with an increase in Dy content, with a slight negative deviation that reaches its maximum where the bcc structure first begins to form from the melt (50 at.% Dy). Because the two-phase field is so narrow, the liquidus and solidus were drawn as a single straight line. The transformation temperature is lowered linearly from this point with increasing Dy content to 1381 C, the transition temperature in pure Dy. The system is characterized by complete mutual solubility in both the solid (cph) and liquid states. The merging solidus and solvus boundaries shown in the assessed diagram indicate a peritectic reaction in this system. [79Shi] successfully calculated the Dy-Er phase diagram using the Kaufman approach. 73Spe: F.H. Spedding, B. Sandeen, and B.J. Beaudry, J. Less-Common Met., 31, 1 (1973). 79Shi: G.J. Shiflet, J.K. Lee, and H.I. Aaronson, Calphad, 3, 129 (1979). Published in Bull. Alloy Phase Diagrams, 4(3), Nov 1983. Complete evaluation contains 2 figures and 3 references. 1