Which mechanism limited cutting tool effectiveness despite widespread bronze axe blade use by Mesopotamians?

💡 Explanation

Repeated impacts on materials caused bronze axe blade work hardening because dislocations accumulated within crystal structures making material brittle and prone to chipping/breakage during use. Therefore work hardening caused brittleness constrained tool use, rather than alternative galvanic corrosion, oxide defects, or eutectic melting that rely upon different environmental failure modes.

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