Abstract
We present the results of numerical analysis of the influence of the mode of preliminary cyclic loading on hydrogen-induced crack growth in high-strength steel with regard for the stress-strain state and diffusion of hydrogen. The elastoplastic stress-strain state at the crack tip under cyclic loading followed by monotonic loading is simulated for the case of high strains. The diffusion of hydrogen at the crack tip is modeled by taking into account the evolution of the stress-strain state from postcyclic compression to tension in the course of hydrogenation. It is shown that the accumulation of hydrogen in the process zone depends on the distribution of residual stresses induced by cyclic preloading.
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Toribio, J., Kharin, V. Influence of Cyclic Preloading on the Hydrogen Degradation of Materials. Materials Science 38, 514–525 (2002). https://doi.org/10.1023/A:1022906531433
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DOI: https://doi.org/10.1023/A:1022906531433