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← HistoryWhich consequence resulted from the quenching process during mass production of medieval Chinese crossbow trigger mechanisms?
A)Greater variability in trigger lifespan✓
B)Improved corrosion resistance of components
C)Enhanced uniformity of grain structures
D)Reduced brittleness decreasing crack formation,
💡 Explanation
Quenching creates hard martensite, yet introduces residual stresses into the triggers, resulting in variable lifecycles because stress corrosion cracking weakens the quenched components therefore lifespan becomes varied, rather than uniformly longer or exhibiting improved corrosion resistance from annealing.
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