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← TechnologyWhich consequence results when quench cracking initiates in a steel support column after rapid cooling?
A)Increased ductile-brittle transition temperature✓
B)Elevated creep resistance at high temperatures
C)Decreased fatigue crack propagation rate
D)Enhanced corrosion resistance in acidic environments
💡 Explanation
Rapid, uneven cooling causes **thermal stress**, exceeding the steel's tensile strength and thus forming brittle cracks. Therefore, the ductile-brittle transition temperature arises, because above this temperature, steel would normally behave in a ductile manner, rather than fracturing easily.
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