Фазовая диаграмма системы Dy-Nd

К оглавлению: Другие диаграммы (Others phase diargams)


Dy-Nd (Dysprosium-Neodymium) K.A. Gschneidner, Jr. and F.W. Calderwood The assessed Dy-Nd phase diagram is based on the work of [72Kob], with adjustments in the melting point and transformation temperatures of the pure metals based on the accepted values. It also includes a revision of the shape of the diagram around the Sm-type phase region, based on the work of [66Lun] on the formation of this phase in binary alloys of light and heavy rare- earth metals. The phase diagram presented by [72Kob] showed the formation of the d phase through a peritectoid reaction of the two solid solutions of (aNd) and (aDy) at about 860 C. However, earlier research by [66Lun] disproved the peritectoid-type reaction for the formation of the Sm-type structure in intra- rare earth alloys. Therefore, in the present diagram, the peritectoid reaction of [72Kob] has been replaced with a congruent transformation to account for the formation of the d phase structure. The shape of the two-phase regions on either side of the Sm-type field, shown as dashed lines, has been adjusted to bring it into accord with the lattice parameter data of [72Cha]. 66Lun: C.E. Lundin, AD-633558 (also given as DRI-2326), final report, Denver Research Institute, University of Denver, Denver, CO (1966). 72Cha: D. Chatterjee and K.N.R. Taylor, J. Phys. F., 2, 151 (1972). 72Kob: G.F. Kobzenko, V.N. Svechnikov, and E.L. Martynchuk, Dop. Akad. Nauk Ukr. RSR A, Fiz.-Mat. Tekh., 563 (1972). Published in Bull. Alloy Phase Diagrams, 3(3), Dec 1982. Complete evaluation contains 3 figures and 9 references. 1