Фазовая диаграмма системы Ag-Au

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Ag-Au (Silver-Gold) H. Okamoto and T.B. Massalski The equilibrium phases of the Ag-Au system are (1) the liquid, L; and (2) the fcc continuous solid solution, (Ag,Au). The assessed phase diagram is based primarily on the work of [59Whi], with review of the work of [54Wag], [57Whi], and [61Coo]. The liquidus and the solidus, as determined by thermal arrest methods and by thermodynamic evaluation, are separated by a gap of about 2 C. Because all recent thermodynamic measurements do not show any major inconsistency with the thermodynamic parameters on which [57Whi] and [59Whi] based their calculation of the phase diagram, their calculation is accepted as most nearly representing the phase relationships. Short-range order has been observed over a wide composition range, but long- range order has not been observed experimentally, although it may exist at low temperatures. 54Wag: C. Wagner, Acta Metall., 2(2), 242-249 (1954). 57Whi: J.L. White, R.L. Orr, and R. Hultgren, Acta Metall., 5(12), 747-760 ( 1957). 59Whi: J.L. White, Trans. AIME, 215(1), 178-181 (1959). 61Coo: C.J. Cooke and W. Hume-Rothery, Acta Metall., 9(10), 982 (1961). Published in Phase Diagrams of Binary Gold Alloys, 1987, and Bull. Alloy Phase Diagrams, 4(1), Jun 1983. Complete evaluation contains 4 figures, 7 tables, and 120 references. 1