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@article{Fernández-Sousa:2022:10.1016/j.ijfatigue.2022.106935,
author = {Fernández-Sousa, R and Betegón, C and Martínez-Pañeda, E},
doi = {10.1016/j.ijfatigue.2022.106935},
journal = {International Journal of Fatigue},
title = {Cohesive zone modelling of hydrogen assisted fatigue crack growth: the role of trapping},
url = {http://dx.doi.org/10.1016/j.ijfatigue.2022.106935},
volume = {162},
year = {2022}
}

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TY  - JOUR
AB  - We investigate the influence of microstructural traps in hydrogen-assisted fatigue crack growth. To this end, a new formulation combining multi-trap stress-assisted diffusion, mechanism-based strain gradient plasticity and a hydrogen- and fatigue-dependent cohesive zone model is presented and numerically implemented. The results show that the ratio of loading frequency to effective diffusivity governs fatigue crack growth behaviour. Increasing the density of \emph{beneficial} traps, not involved in the fracture process, results in lower fatigue crack growth rates. The combinations of loading frequency and carbide trap densities that minimise embrittlement susceptibility are identified, providing the foundation for a rational design of hydrogen-resistant alloys.
AU  - Fernández-Sousa,R
AU  - Betegón,C
AU  - Martínez-Pañeda,E
DO  - 10.1016/j.ijfatigue.2022.106935
PY  - 2022///
SN  - 0142-1123
TI  - Cohesive zone modelling of hydrogen assisted fatigue crack growth: the role of trapping
T2  - International Journal of Fatigue
UR  - http://dx.doi.org/10.1016/j.ijfatigue.2022.106935
UR  - http://arxiv.org/abs/2204.07079v1
UR  - https://www.sciencedirect.com/science/article/pii/S0142112322002043
UR  - http://hdl.handle.net/10044/1/97069
VL  - 162
ER  -

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