Hydrogen Embrittlement Susceptivity of Hot-Dip Galvanized Steel in Wet-Dry Cyclic Simulated Marine Atmospheric Environment

Da Lei Zhang; Yan Li; You Hai Jin; Xiao Tang

doi:10.4028/www.scientific.net/AMR.197-198.1443

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Hydrogen Embrittlement Susceptivity of Hot-Dip Galvanized Steel in Wet-Dry Cyclic Simulated Marine Atmospheric Environment
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Hydrogen Embrittlement Susceptivity of Hot-Dip Galvanized Steel in Wet-Dry Cyclic Simulated Marine Atmospheric Environment

Abstract:

Hydrogen permeation and embrittlement behavior of hot-dip galvanized steels in wet-dry cyclic simulated marine atmospheric environment was investigated by hydrogen permeation current measurement using modified Devanathan-Stachurski cell, slow strain rate tensile test and scanning electron microscopy technique. It was found that hydrogen absorption was accelerated in wet-dry cyclic environment. On the other hand, hydrogen absorption and permeation reduced the percentage elongation after fracture of galvanized steel specimens; meanwhile, the fracture characteristics of samples fringe occurred some lacerated phenomena, i.e., galvanized steels show a higher susceptivity of hydrogen embrittlement when exposed to wet-dry cyclic marine atmospheric environment.