What is a substitutional solid solution? And what factors favor the formation of a substitu - tional solid solution?

Substitutional solids solution are formed when there is change in position of atom named as A in lattice by some other atoms of different atoms named as B.

Explanation:

Substitutional solids solution are formed when there is change in position of atom named as A in lattice by some other atoms of different atoms named as B.

Strengthening of this solution occurs when solute atom is lager than solvent atom so that it can replace its position

factor affect the extent of solid solution is

1) Relative atomic size

2) crystal structure

3) chemical affinity

4) valency

A substitutional solid solution is a kind of alloying process used to improve or strengthen a purer metal by alloying it. this process works out by adding atoms of an alloy element to the atoms of the crystal lattice of the parent or base element, thus forming a substitutional solid solution. This process generates local non uniformity in the lattice due to the presence or mixing of an alloy element with the base element which impedes the plastic deformation.

Factors that favor the formation of substitutional solid solution are:

Alloying beyond the solubility limit Chemical affinity of the elements Relative atomic size of the particles Crystal structure of the elements Valence