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← HistoryWhich risk increases when early Chinese cast iron cannons experienced rapid heating?
A)Increased elastic modulus of iron
B)Catastrophic quenching of barrel metal
C)Accelerated rate of thermal creep✓
D)Decreased coefficient of thermal expansion
💡 Explanation
Thermal creep increases due to the high temperatures because the increased kinetic energy in the iron facilitates dislocation movement, leading to deformation, therefore dimensional accuracy reduces rather than increases, different elastic responses manifest.
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