The common name for a solid-solid solution of metals is an alloy.

Here's why:

* Alloy: A mixture of two or more metals (and sometimes non-metals) that are dissolved into each other. The resulting material has different properties than the individual metals.

* Solid-Solid Solution: This refers to the fact that both components of the alloy are in a solid state. The atoms of the different metals are intermixed, creating a homogeneous mixture.

Examples of common alloys include:

* Brass: An alloy of copper and zinc.

* Bronze: An alloy of copper and tin.

* Steel: An alloy of iron and carbon.

Let me know if you have any other questions!