Question

In plastic deformation, deformation is

• A. reversible
• B. permanent
• C. both
• D. none

Answer 1

Answer: (B)

permanent

$answer:-$ B

Deformation refers to any changes in the shape or size of an object due to-

• an applied force (the deformation energy in this case is transferred through work) or
• a change in temperature (the deformation energy in this case is transferred through heat).

Plastic deformation-This type of deformation is irreversible. However, an object in the plastic deformation range will first have undergone elastic deformation, which is reversible, so the object will return part way to its original shape.

If you cross yield point it becomes plastic deformation.