Question

Question
Which one of the following is not the purpose of full annealing?
Option 1:
to refine grains
Option 2:
to induce softness.
Option 3:
to remove strains and stresses
Option 4
to produce hardest material​

Answer 1

Answer:

the correct option is 4

Explanation:

To produce hardest material

Answer 2

Option 4. to produce hardest material is not the purpose of full annealing.

Explanation for the correct answer:

• Annealing is a heat treatment process which is used to change the physical and sometimes the chemical properties of a material.
• It is used mostly to increase the ductility and reduce the hardness of a material to it more workable.
• There are mainly three stages in an annealing process: Recovery stage, Recrystallization stage and Grain growth stage.
• Hence, the correct answer among all the options is Option 4. to produce hardest material.