Фазовая диаграмма системы Sc-Zr

К оглавлению: Другие диаграммы (Others phase diargams)


Sc-Zr (Scandium-Zirconium) A. Palenzona and S. Cirafici The assessed Sc-Zr phase diagram is based largely on the work of [63Bea], but changes in the melting points and transformation temperatures of Sc and Zr were made to agree with the currently accepted values. No information is available on the liquidus curve. [62Bea] and [63Bea] investigated the Sc-Zr equilibrium phase diagram by means of differential thermal analysis (DTA). The solidus curve was determined, but the liquidus curve was not. The maximum in the a = b transformation temperature was determined by [63Bea] from the results of DTA, with an estimated с1 at.% Zr uncertainty in the composition of the maximum. [71Dou] observed that the transformation temperatures in the whole system could have been increased by the high oxygen content in the starting Sc metal. [74Wan] and [76Wan] studied the metastable solubility limits of primary cph solid solutions by quenching alloys from the liquid state. 62Bea: B.J. Beaudry and A.H. Daane, USAEC Rep. IS-596, 14 (1962). 63Bea: B.J. Beaudry and A.H. Daane, Trans. Metall. Soc. AIME, 227, 865-868 ( 1963). 71Dou: D.L. Douglass, At. Energy Rev., Suppl. IAEA, Vienna (1971). 74Wan: R. Wang and Y.B. Kim, Metall. Trans., 5, 1973-1977 (1974). 76Wan: R. Wang, Mater. Sci. Eng., 23, 135-140 (1976). Submitted to the APD Program. Complete evaluation contains 2 figures, 4 tables, and 14 references. 1