Hydrogen Degradation Effects on Crack Propagation in High-Strength Steels: A Fully Coupled Approach

B. Sobhaniaragh; S.H. Afzalimir; C. Ruggieri

doi:10.1007/978-981-15-9893-7_11

Hydrogen Degradation Effects on Crack Propagation in High-Strength Steels: A Fully Coupled Approach

B. Sobhaniaragh, S.H. Afzalimir, C. Ruggieri

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This study presents a fully coupled cohesive zone model (CZM)-based computational framework to simulate crack propagation in high strength steels. The model comprises initially zero thickness, cohesive-interface elements with the constitutive response described by a hydrogen-degraded Park-Paulino-Roesler (PPR) model. The linear dependence on hydrogen concentration according to a phenomenological decohesion model is chosen for the critical cohesive traction. Moreover, the value of the cohesive energy of the traction separation law (TSL) is adopted from the experimental data of hydrogen-charged specimen. The computational framework accounting for both hydrogen enhanced localized plasticity (HELP) and hydrogen enhanced decohesion (HEDE) mechanisms is employed to simulate crack growth in a C(T) specimen made of AISI 4130 high-strength steel. The parameters included in the PPR model are satisfactorily calibrated with experimental data for the uncharged and hydrogen-charged specimens. It has been concluded that the lattice hydrogen has the dominating factor in the hydrogen degradation compared with trapped hydrogen.

Original language	English
Title of host publication	Proceedings of the 8th International Conference on Fracture, Fatigue and Wear
Editors	M Abdel Wahab
Publisher	Springer
Pages	165-178
ISBN (Electronic)	9789811598937
ISBN (Print)	9789811598920
DOIs	https://doi.org/10.1007/978-981-15-9893-7_11
Publication status	Published - 13 Jan 2021
Externally published	Yes
Event	8th International Conference on Fracture, Fatigue and Wear - Online Duration: 26 Aug 2020 → 27 Aug 2020 http://2021.ffwconf.org/2020/

Publication series

Name	Lecture Notes in Mechanical Engineering
Publisher	Springer
ISSN (Print)	2195-4356
ISSN (Electronic)	2195-4364

Conference

Conference	8th International Conference on Fracture, Fatigue and Wear
Abbreviated title	FFW2020
Period	26/08/20 → 27/08/20
Internet address	http://2021.ffwconf.org/2020/

Access to Document

10.1007/978-981-15-9893-7_11

Cite this

Sobhaniaragh, B., Afzalimir, S. H., & Ruggieri, C. (2021). Hydrogen Degradation Effects on Crack Propagation in High-Strength Steels: A Fully Coupled Approach. In M. Abdel Wahab (Ed.), Proceedings of the 8th International Conference on Fracture, Fatigue and Wear (pp. 165-178). (Lecture Notes in Mechanical Engineering). Springer. https://doi.org/10.1007/978-981-15-9893-7_11

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abstract = "This study presents a fully coupled cohesive zone model (CZM)-based computational framework to simulate crack propagation in high strength steels. The model comprises initially zero thickness, cohesive-interface elements with the constitutive response described by a hydrogen-degraded Park-Paulino-Roesler (PPR) model. The linear dependence on hydrogen concentration according to a phenomenological decohesion model is chosen for the critical cohesive traction. Moreover, the value of the cohesive energy of the traction separation law (TSL) is adopted from the experimental data of hydrogen-charged specimen. The computational framework accounting for both hydrogen enhanced localized plasticity (HELP) and hydrogen enhanced decohesion (HEDE) mechanisms is employed to simulate crack growth in a C(T) specimen made of AISI 4130 high-strength steel. The parameters included in the PPR model are satisfactorily calibrated with experimental data for the uncharged and hydrogen-charged specimens. It has been concluded that the lattice hydrogen has the dominating factor in the hydrogen degradation compared with trapped hydrogen.",

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Sobhaniaragh, B, Afzalimir, SH & Ruggieri, C 2021, Hydrogen Degradation Effects on Crack Propagation in High-Strength Steels: A Fully Coupled Approach. in M Abdel Wahab (ed.), Proceedings of the 8th International Conference on Fracture, Fatigue and Wear. Lecture Notes in Mechanical Engineering, Springer, pp. 165-178, 8th International Conference on Fracture, Fatigue and Wear, 26/08/20. https://doi.org/10.1007/978-981-15-9893-7_11

Hydrogen Degradation Effects on Crack Propagation in High-Strength Steels: A Fully Coupled Approach. / Sobhaniaragh, B.; Afzalimir, S.H.; Ruggieri, C.
Proceedings of the 8th International Conference on Fracture, Fatigue and Wear. ed. / M Abdel Wahab. Springer, 2021. p. 165-178 (Lecture Notes in Mechanical Engineering).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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