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← ScienceWhich deformation results from exceeding shear stress in amorphous solids?
A)Formation of shear bands occurs✓
B)Elastic strain limit increases instead
C)Brittle fracture strength improves
D)Ductile necking becomes less likely
💡 Explanation
Shear bands form locally, because excessive shear stress causes localized plastic deformation via a mechanism called shear localization. Therefore, shear bands form rather than more uniform plastic flow, because amorphous solids lack a crystal lattice to facilitate dislocation movement.
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