Alloys are better than pure metals in terms of tensile strength because they have a more uniform composition and structure compared to pure metals. Pure metals have strong metallic bonds that allow them to easily deform under stress, making them softer and weaker. On the other hand, alloys contain two or more metals combined in specific ratios, which form intermetallic compounds that strengthen the metal. These intermetallic compounds make it more difficult for the metal to deform under stress, resulting in higher tensile strength. Additionally, alloying can modify the crystal structure of metals, resulting in the formation of smaller and more uniform grains, which further improve the strength and resistance to deformation.
