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← ScienceWhich outcome is observed when dislocations impede slip within a crystal lattice?
A)Increased material tensile strength✓
B)Decreased electrical conductivity
C)Enhanced thermal diffusivity
D)Elevated ductile-brittle transition temperature
💡 Explanation
Increased strength happens because dislocation pile-up causes work hardening, which is a strength mechanism. Dislocations impede movement; therefore, yielding requires greater applied stress, rather than causing altered conductivity or promoting brittle behavior under different conditions.
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