Alloying element B with element A, which are completely soluble in the liquid state but insoluble in the solid state, may result in a higher melting point for the alloy compared to pure A. Upon cooling, the constituents will separate, leading to a solid phase of A and a distinct phase of B. The discussion raises questions about the eutectic point, which is characterized by a minimum melting point due to the thermodynamic stability of the mixture. The concept of maximum melting eutectic is questioned, suggesting that it may not exist because of the nature of phase diagrams. Understanding these principles is crucial for predicting the behavior of alloys during solidification.
