Abstract
The Cu-Nb and Cu-Cr alloys at compositions ranging from 5 to 86 wt% Nb (89 wt% Cr) were processed in a clean environment and solidified at relatively low cooling rates of 50 to 75 °C/s to determine liquidus temperatures. In this study, both temperature measurements and microstructural observations confirmed the equilibrium phase diagram having an S-shaped, nearly flat liquidus, rather than that with a monotectic reaction in the liquid state. However, a metastable liquid miscibility gap exists in the two systems.
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Li, D., Robinson, M.B. & Rathz, T.J. Measurements of liquidus temperatures in the Cu-Nb and Cu-Cr systems. JPE 21, 136 (2000). https://doi.org/10.1361/105497100770340183
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DOI: https://doi.org/10.1361/105497100770340183