Why is Iron is considered the solvent and carbon is the solute Metal alloys?

In metal alloys, iron is considered the solvent because it is typically the primary component and provides the base structure of the alloy. Carbon, as the solute, is present in a smaller proportion and dissolves within the iron matrix, altering its properties. This solubility allows carbon to influence the mechanical characteristics of the alloy, such as hardness and strength, making it a critical addition in materials like steel. The distinction between solvent and solute in this context highlights the roles each element plays in defining the overall properties of the alloy.