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The effect of Zn coating layers on the hydrogen embrittlement of hot-dip galvanized twinning-induced plasticity steel

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Han,  Jeongho
Department of Materials Science and Engineering, Chungnam National University, Daejeon, 34134, Republic of Korea;
Alloy Design and Thermomechanical Processing, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Citation

Jeon, H., Lee, S.-M., Han, J., Park, I., & Lee, Y.-K. (2016). The effect of Zn coating layers on the hydrogen embrittlement of hot-dip galvanized twinning-induced plasticity steel. Corrosion Science, 111, 267-274. doi:10.1016/j.corsci.2016.05.014.


Cite as: https://hdl.handle.net/21.11116/0000-0001-B230-F
Abstract
The effect of Zn coating layers on hydrogen embrittlement (HE) was investigated using hot-dip galvanized (HDG) twinning-induced plasticity (TWIP) steel. The Zn coating layers consisted of an η-Zn layer and Fe-Zn intermetallic layers of ζ and δ without Γ. H was trapped particularly at the ζ layer without Zn-H compounds. The activation energies of H desorption from the δ and ζ layers were 60.0 kJ mol−1 and 75.4 kJ mol−1, respectively. The H-charged HDG_TWIP steel did not reveal HE due to the intermetallic layers, which are exceptionally brittle even when H is not enriched. © 2016 Elsevier Ltd