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← HistoryWhich outcome results when repeated annealing of bronze tools by early metallurgists is uneven?
A)Increased ductility; easier deformation
B)Formation of stress concentrations; cracking✓
C)Enhanced corrosion resistance achieved
D)Uniform grain growth established
💡 Explanation
Uneven annealing introduces differential heating and cooling, leading to spatially varying Ductility gradients and thermal expansion. Internal stresses accumulate due to differential Contraction where the Diffusion creep mechanism causes localized brittleness therefore cracking is more probable rather than increased ductility.
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