Question

In order to return to its pre-cold worked state, a material can undergo recrystallization. Explain how recrystallization offsets the effects of cold working.

Answer 1

Defination of cold work:

Cold work is the metal working below the recrystallisation of temperature and done in room temperature

recrystallisation is the formation of a new set of strain free and equiaxed grains that have low dislocation densities and are characteristics of precold worked condition

The new grain s from as very small nuclei and grow until they completly consume the parental materials processes that involve short range diffusion

Recrystallization of cold worked metals may be used to refine the grain structure. During the recrystalization the metals become softer ,weaker, yet more ductile

recrytallization is a process the extent of which depends on both time and temperature .The degree of recrystallization increases with time. the influence of temperature is demonstated which plots tensile strength and dectile of a brass alloy