What is hydrogen induced cracking?
Hydrogen Induced Cracking Overview (HIC) Hydrogen Induced Cracking (HIC) is a kind of wet H2S cracking induced by the blistering of a metal owing to a high hydrogen concentration. Blistering damage often develops parallel to the surface and in the direction of hoop stress. Hydrogen Induced Cracking Test in Thane
Where does hydrogen induced cracking occur?
Cracking caused by hydrogen (HIC) When atomic hydrogen diffuses into carbon or low-alloy steels, it generates molecular hydrogen. Inclusions or trap sites may aid in the formation of molecular hydrogen. As a result, HIC can arise in the absence of stress.
A common kind of hydrogen embrittlement is hydrogen-induced craking (HIC), also known as hydrogen stress cracking or static fatigue. It is distinguished by the brittle fracture of a typically ductile alloy in the presence of hydrogen under prolonged strain. Fracture happens more frequently with prolonged stresses below the material’s yield strength. This cracking mechanism is affected by hydrogen fugacity, material strength, heat treatment/microstructure, applied stress, and temperature. Many ferrous and nonferrous metals may be harmed by hydrogen in both aqueous and gaseous hydrogen-containing conditions. These metals include carbon steel, alloy steel, nickel and nickel alloys, and so on.
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