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Updated: Dec 17, 2025

Hydrogen Charging of Aluminum using Friction in Water
Published on: January 28, 2020
The influence of hydrogen on plasticity in pure iron-theory and experiment
Peng Gong1, Ivaylo H Katzarov2,3, John Nutter1
1Department of Materials Science and Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, UK.
Abstract:
Tensile stress relaxation is combined with transmission electron microscopy to reveal dramatic changes in dislocation structure and sub structure in pure α-Fe as a result of the effects of dissolved hydrogen. We find that hydrogen charged specimens after plastic deformation display a very characteristic pattern of trailing dipoles and prismatic loops which are absent in uncharged pure metal. We explain these observations by use of a new self consistent kinetic Monte Carlo model, which in fact was initially used to predict the now observed microstructure. The results of this combined theory and experimental study is to shed light on the fundamental mechanism of hydrogen enhanced localised plasticity.
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