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← HistoryWhich mechanism explains why early Bronze Age axes often failed when chopping dense wood?
A)Work hardening causing brittle fracture✓
B)Electrolytic corrosion accelerating rust
C)Creep deformation under sustained load
D)Thermal expansion separating the head
💡 Explanation
When bronze axes impacted hard wood, the repeated deformation caused work hardening, which increased brittleness and led to fracture because the bronze lacked significant ductility. Therefore brittle fracture resulted, rather than corrosion, creep, or thermal expansion which require different environmental catalysts and loading.
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