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← TechnologyWhich increased risk emerges during closed-die forging near steel's no-twist temperature?
A)Accelerated intergranular corrosion at grain boundaries✓
B)Increased probability of incomplete die filling
C)Elevated risk from surface decarbonization
D)Augmented martensite phase transformation kinetics
💡 Explanation
Intergranular corrosion risk increases near steel's no-twist temperature because dynamic recrystallization initiates a network of reactive grain boundaries; this process weakens grain interfaces making them susceptible to corrosive attack, therefore accelerating intergranular corrosion, rather than other surface phenomena or transformation kinetics.
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