Question

Define plasticity.

• A. Ability to regain its original shape.
• B. Ability to flow when subjected to stress.
• C. Ability to change shape permanently.
• D. Both B and C.

Answer 1

Answer: (D)

Both B and C.

Plasticity is the ability of certain solids to flow or to change shape permanently when subjected to stresses of intermediate magnitude between those producing temporary deformation, or elastic behavior, and those causing failure of the material, or rupture.

Plasticity enables a solid under the action of external forces to undergo permanent deformation without rupture.