Effect of Reversible Hydrogen Trapping on Crack Propagation in the API 5CT P110 Steel - A Numerical Simulation


  • D Diniz
  • E Silva
  • J Carrasco
  • J Barbosa
  • A Silva




This paper presents a numerical simulation of the reversible hydrogen trapping effect on crack propagation in the API 5CT P110 steel using a model based on a synthesis of fracture mechanics and continuum damage mechanics. The trapping term at the diffusion equation of this model was replaced by the equivalent term of McNab & Foster's model. Was simulated an C(T) specimen loaded in the mode I, in linear elastic regime, in plane strain state, and under the action of a static mechanical loading and hydrogen effect. The simulations showed that the material degradation ahead of crack tip increases with increasing in hydrogen concentration due the trapping with low interaction energies. Furthermore, the process of onset and crack growth in material with reversible traps is faster than the material free of traps. These results show a good correlation and consistency with macroscopic observations of the trapping effect, providing a better understanding of the hydrogen embrittlement in structural steels.


Krom, A. H. M.; Bakker, A. D., Hydrogen Trapping Models in Steel, Metallurgical and Materials Transactions, 1999, 31b, 1475-1482.

Oriani, R. A., The Physical and Metallurgical Aspects of Hydrogen in Metals. In: International Conference on Cold Fusion, 4, 06-09 dec. 1993, Lahaina, Maui. Proceedings of Fourth International Conference on Cold Fusion, Palo Alto: EPRI, 1993.

Taha, A.; Sofronis, P., A Micromechanics Approach to the Study of Hydrogen Transport and Embrittlement, Engineering Fracture Mechanics, 2001, 68, 803-837. https://doi.org/10.1016/s0013-7944(00)00126-0

Maroef, I.; Olson, D. L.; Eberhart, M.; Edwards, G. R., Hydrogen Trapping in Ferritic Steel Weld Metal, International Materials Reviews, 2002, 47(4), 191-223. https://doi.org/10.1179/095066002225006548

Grabke, H. J.; Riecke, E., Absorption and Diffusion of Hydrogen in Steels, Materiali in Tehnologije, 2000, 34(6), 331-342.

Luppo, M. I.; Ovejero-Garcia, J., The Influence of Microstructure on the Trapping and Diffusion of Hydrogen in a Low Carbon Steel, Corrosion Science, 1991, 32(10), 1125-1136. https://doi.org/10.1016/0010-938x(91)90097-9

Chaudhari, B. S.; Radhakrishnan, T. P., A Reexamination of the Trapping of Hydrogen in Iron and Steel, Materials Transactions, 1993, 34(5), 443-449. https://doi.org/10.2320/matertrans1989.34.443

McNabb A.; Foster, P. K., A New Analysis of the Diffusion of Hydrogen in Iron and Ferritic Steel, Trans. AIME, 1963.

Oriani, R. A., The Diffusion and Trapping of Hydrogen in Steel, ActaMetallurgica, 1970, 18, 147-157.

Kanayama, H.; Ndong-Mefane, S.; Ogino, M.; Miresmaeili, R.; Reconsideration of the Hydrogen Diffusion Model Using the McNabb-Foster Formulation, Memoirs of the Faculty of Engineering, Kyushu University, 2009, 69(4), 149-161.

Bolotin, V. V.; Shipkov, A. A., Mechanical Aspects of Corrosion Fatigue and Stress Corrosion Cracking, International Journal of Solids and Structures, 2001, 38, 7297-7318. https://doi.org/10.1016/s0020-7683(01)00002-6

Bolotin, V. V., Stability Problems in Fracture Mechanics, John Wiley & Sons, New York, EUA, 1996, 188.

Carrasco, J. P.; Diniz, D. D.; Barbosa, J. M. A.; Silva, A. A. Numerical Modeling of Hydrogen Diffusion in Structural Steels under Cathodic Overprotection and its Effects on Fatigue Crack Propagation, Materials Science and Engineering Technology, 2012, 43(5), 392-398. https://doi.org/10.1002/mawe.201200971

ASTM E1820-08a. Standard Test Method for Measurements of Fracture Toughness, American Society for Testing Materials, New York, 2008.

Carrasco, J. P., Coupling of Damage and Fracture Mechanics Models for Assessment of Structural Integrity under the Effect of Hydrogen Generated in Cathodic Protection Systems. Thesis (Doctorate in Science and Materials Engineering) - Federal University of Campina Grande, 2013.



How to Cite

Diniz, D., Silva, E., Carrasco, J., Barbosa, J. and Silva, A. (2014) “Effect of Reversible Hydrogen Trapping on Crack Propagation in the API 5CT P110 Steel - A Numerical Simulation”, The International Journal of Multiphysics, 8(3), pp. 313-324. doi: 10.1260/1750-9548.8.3.313.