Combining two or more different substances produces what is known in Chemistry as a mixture. Depending on the properties of each constituent of the mixture, the desired product, and various other factors, the process may involve more than just stirring or kneading. Mixing metals, for instance, naturally involves smelting and annealing since metals are hard solid, and this is the most efficient way to produce another metal.
The process of combining a metal with one or more metals or with one or more non-metals is called alloying. This practice dates back thousands of years when man discovered that copper can be combined with tin to form bronze. Since then, humans have been obsessed with producing harder and more flexible metals through alloying. Even today, many of the metals that were first used for alloying are still spawning different kinds of materials that are widely utilized for a range of applications. Read more from this blog: http://www.rotaxmetals.net/alloying-understanding-how-copper-and-brass-suppliers-make-the-toughest-materials/