Why does elasticity increase when a material is hammered if material with smaller grains are more plastic?(as hammering breaks the material into smaller grains than annealing which decreases elasticity)

1) When the material has hammered the elasticity of the material increases because of the property of the elasticity such as:

2) When we apply the external force on a body, and there is no acceleration, then the effect of external forces will deform the body.

3) The deformation of the body depends on the elastic property.

4) The body will regain its original shape and size if the deforming forces are withdrawn because of the restoring force acting on the body.

The material of smaller grains has high ductility because it increases with a decrease in size.

Thus, this is the reason why elasticity increases when the material is hammered.