Which term describes the force required to produce distortion in the crystal lattice?

Which term describes the force required to produce distortion in the crystal lattice?

• A. Strain
• B. Surface Graining
• C. Vacancy
• D. Stress

Answer: (D)

Stress is the force applied per unit area within a material that causes deformation of the crystal lattice. It describes the internal force resisting or producing the distortion when a load is applied. Strain, by contrast, is the actual deformation or distortion that results from that stress. A vacancy is a missing atom in the lattice, a type of defect, not a measure of the force causing distortion. Surface graining isn’t a standard term for this context.

Stress is the force applied per unit area within a material that causes deformation of the crystal lattice. It describes the internal force resisting or producing the distortion when a load is applied. Strain, by contrast, is the actual deformation or distortion that results from that stress. A vacancy is a missing atom in the lattice, a type of defect, not a measure of the force causing distortion. Surface graining isn’t a standard term for this context.