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Which consequence results when excessive supercooling occurs during steel's phase transition?

A)Increased grain boundary precipitation✓
B)Enhanced carbon solid solution
C)Elevated ductile to brittle transition
D)Reduced cementite allotrope formation

💡 Explanation

Increased grain boundary precipitation results because nucleation rate dramatically increases during supercooling given the thermodynamic drive; this drives diffusion controlled processes, therefore substantial precipitation occurs, rather than promoting uniform crystalline growth.

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