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Which outcome results when dislocations impede slip planes?

A)A metal alloy strengthens
B)Increased thermal conductivity occurs
C)Fewer surface defects occur
D)Material becomes more brittle

💡 Explanation

Work hardening occurs because dislocation tangles block **plastic deformation**. Therefore the alloy strengthens, rather than fracture, because grain sliding is inhibited at the atomic lattice level rather than directly increasing brittleness or conductivity.

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