Which outcome arises when ancient Mesopotamian bronze tools experience cyclical stress during harvesting?

💡 Explanation

When bronze tools undergo repetitive stress during harvesting, fatigue cracking initiates around pre-existing impurities, because cyclical loading causes dislocations to accumulate and coalesce into microvoids, weakening the metal. Therefore void formation at impurity sites results, unlike grain deformation, crystallization or corrosion, which depend on temperature, elemental diffusion, and chemical reactions respectively.

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