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← ScienceWhich structural collapse occurs when a crystalline lattice experiences significant stresses?
A)Dislocation avalanche generates plastic deformation✓
B)Work hardening increases material brittleness
C)Creep deformation raises the brittle threshold
D)Grain boundary sliding increases yield strength
💡 Explanation
A dislocation avalanche causes plastic deformation because applied stress surpasses the Peierls stress, initiating movement within the lattice; therefore, the material deforms plastically, rather than exhibiting brittle failure or increased yield strength due to work hardening.
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