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Hydrogen Induced Cracking (HIC)

2025-12-24View Original

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Under the action of hydrogen pressure, adjacent hydrogen bubbling cracks on different levels are connected to each other, forming internal cracks with ladder-like characteristics called hydrogen-induced cracking. The cracks can sometimes extend to the metal surface. The occurrence of HIC does not require external stress, and is generally related to the irregular microstructure produced by high-density large-plane inclusions in the steel or the segregation of alloying elements in the steel. Hydrogen-Induced Cracking Mechanism in Acidic Environment Hydrogen-Induced Cracking Mechanism in Acidic Environment

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