Hydrogen diffusion under the effect of stress and temperature gradients
Zhichao Zhang (University of Northumbria, TU Delft - Mechanical Engineering)
Can Ayas (TU Delft - Mechanical Engineering)
Vera Popovich (TU Delft - Mechanical Engineering)
Jurriaan Peeters (TU Delft - Mechanical Engineering)
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Abstract
In this paper, a finite element (FE) model is developed to investigate lattice hydrogen diffusion in a solid metal under the influence of stress and temperature gradients. This model is applied to a plate with a circular hole which is subjected to temperature and hydrogen concentration gradients. It is demonstrated that temperature gradients significantly influence hydrogen diffusion and hence susceptibility to hydrogen embrittlement when utilizing hydrogen for gas turbines.
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