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← ScienceWhich risk increases rapidly when crystal lattice dislocations impede crack propagation?
A)Ductile fracture energy✓
B)Electrical conductivity improves
C)Material exhibits anisotropic behavior
D)Temperature approaches absolute zero
💡 Explanation
Ductile fracture energy increases because strain hardening via work distribution becomes less effective as dislocation motion is blocked, rather than enabling plastic deformation. Therefore fracture occurs faster due to limited distribution of energy, rather than slower as in pure homogeneous metals.
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