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Which latent failure is triggered when welding high-strength steel?

A)Delayed hydrogen-induced cracking occurs
B)Rapid galvanic corrosion accelerates ablation
C)Ductile fracture toughness instantaneously drops
D)Austenite phase transformation stops immediately

💡 Explanation

Hydrogen-induced cracking occurs due to hydrogen diffusing into the weld microstructure, embrittling the steel. Therefore, delayed cracking occurs, rather than immediate or galvanic failures, because hydrogen diffusion needs time after cooling during solid phase transformation.

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