Фазовая диаграмма системы Gd-Y

К оглавлению: Другие диаграммы (Others phase diargams)


Gd-Y (Gadolinium-Yttrium) K.A. Gschneidner, Jr. and F.W. Calderwood The assessed phase diagram for the Gd-Y system is based primarily on the work of [62Spe]. The room-temperature form of Gd and Y is the normal cph structure ( ABAB). Both room-temperature and high-temperature forms exhibit complete solid solubility. The high-temperature bcc structure could not be retained at room temperature by quenching. [79Shi] calculated the liquidus and solidus lines and the solvus lines that define the two-phase field at the bcc = cph transformation. These were generally in good agreement with the experimentally determined lines, but the width of the two-phase field between each set of lines was too narrow. Amorphous alloys have been prepared by sputtering onto an aluminum substrate at 78 K under argon pressure. A chemical short-range order was indicated by the interference and radial distribution function [81Lar]. 62Spe: F.H. Spedding, R.M. Valletta, and A.H. Daane, Trans. ASM Q., 55, 483 ( 1962). 79Shi: G.J. Shiflet, J.K. Lee, and H.I. Aaronson, Calphad, 3, 129 (1979). 81Lar: M. Laridjiani and J.F. Sadoc, J. Phys. (Paris), 42, 1293 (1981). Published in Bull. Alloy Phase Diagrams, 4(2), Sep 1983. Complete evaluation contains 2 figures and 8 references. 1