Which term describes the ability of a material to permanently change in shape?

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Multiple Choice

Which term describes the ability of a material to permanently change in shape?

Explanation:
Permanently changing shape under stress is called plasticity. When a material deforms and does not spring back after the force is removed, the change is plastic deformation. By contrast, elastic behavior means the material returns to its original shape once the load is removed. Ductility describes how much plastic deformation a material can undergo before it breaks, which is related but not the exact idea of a permanent shape change. Fusibility refers to melting, not deformation under load. So the term that describes the ability to permanently change in shape is plasticity.

Permanently changing shape under stress is called plasticity. When a material deforms and does not spring back after the force is removed, the change is plastic deformation. By contrast, elastic behavior means the material returns to its original shape once the load is removed. Ductility describes how much plastic deformation a material can undergo before it breaks, which is related but not the exact idea of a permanent shape change. Fusibility refers to melting, not deformation under load. So the term that describes the ability to permanently change in shape is plasticity.

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