Isothermal sections of the Co–Nb-Re phase diagram at 1200 and 1375 KстатьяИсследовательская статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 20 декабря 2019 г.
Аннотация:Isothermal sections of the Co–Nb-Re system were constructed at 1375 K and 1200 K by investigations of equilibrated alloys using electron probe microanalysis (EPMA), scanning electron microscopy (SEM), powder X-ray diffraction (PXRD), and differential thermal analysis (DTA). Phases take part in the following three-phase equilibria in the Co–Nb-Re system at 1375 K: (γСо+λ+λ′), (γСо+λ+(Re)), (λ+μ+(Re)), (μ+χ+(Re)), and (βNb+μ+χ). In the Co–Nb-Re system at 1200 K, the existence of five three-phase equilibria (γСо+λ+λ′), (γСо+λ+(Re)), (λ+μ+(Re)), (μ+χ+(Re)), and (βNb+μ+χ) has been established and the existence of three-phase equilibrium (γСо+λ+Co3Nb) has been assumed. The Laves phase λ′ is a ternary phase at 1200 K and crystallizes with the MgNi2-type of the crystal structure.