Which microstructural change occurs in early bronze tools when repeatedly cold worked, such as hammering?

💡 Explanation

When bronze tools are repeatedly cold worked, dislocation density increases because plastic deformation introduces defects into the crystalline structure, increasing resistance to slip and thus raising hardness. Therefore, increased dislocation density results, rather than grain growth, phase segregation, or recrystallization each reliant on different thermomechanical processes.

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