An alloy is a partial or complete solid solution of one or more elements in a metallic matrix. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may be homogeneous in distribution depending on thermal (heat treatment) history. Alloys usually have different properties from those of the component elements. Theory Alloying one metal with other metal(s) or non metal(s) often enhances its properties. For example, steel is st… (More on Alloy)