Question

difference between recovery recrystallization and grain growth

Answer 1

Recovery is the process by which deformed grains can reduce their stored energy by the removal of or rearrangements of defects in their crystal structure.
 

The process is normally accompanied by a reduction in a material strength and also a simultaneous increase in the ductility.

Re crystallization is a technique used to purify chemicals, by dissolving both impurities and a compound in an appropriate solvent then either the desired compound, or the impurities can be removed from the solution hence leaving the solution behind.

Grain growth is the increase in the size of the grain (crystallizes) in a material at high temperature. It normally occur when recovery and recrystallization are already completed and further reduction in the internal energy can only be achieved by reducing the total area of grain boundary.

Answer 2

Grain Growth:

Recovery is a process by which deformed grains can reduce their stored energy b the removal of defects in their crystal structure.

It takes place at low temperature, remove the defects and dislocations from the crystal molecules and align them to for low energy configurations.

Recrystallization:

Recrystallization is the process in which deformed grains are replaced b stain-free grains. The energy required for the Recrystallization process comes from the stored energy in the material.

In Recrystallization process, crystal structure changes into a new structure and shape crystal.