Coupling aspects in the simulation of hydrogen-induced stress-corrosion cracking

Brocks, W.; Falkenberg, Rainer; Scheider, Ingo

doi:10.1016/j.piutam.2012.03.002

Cited by 36 publications

(29 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A thorough description of the model can be found in [14,54]. By including both local hydrogen softening and hydrogen induced lowering of the local cohesive strength, the model describes an attempt in the direction of including both the HEDE and the HELP degradation mechanisms and their interactions.…”

Section: Practical Applications Of the Coupled Cohesive Modelmentioning

confidence: 99%

“…In recent years, cohesive zone modelling (CZM) has gained increasing interest as suitable method for modelling hydrogen embrittlement [10][11][12]14,16], with the possibility of providing increased understanding of the involved process and their interactions combined with reduced time and costs compared to experimental programs. The damage process is classically described by interface elements, which constitutive relation is defined by a cohesive law (traction separation law).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures

Jemblie

Olden

Akselsen

2017

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

Simulation of hydrogen embrittlement requires a coupled approach; on one side, the models describing hydrogen transport must account for local mechanical fields, while on the other side, the effect of hydrogen on the accelerated material damage must be implemented into the model describing crack initiation and growth. The present study presents a review of coupled diffusion and cohesive zone modelling as a method for numerically assessing hydrogen embrittlement of a steel structure. While the model is able to reproduce single experimental results by appropriate fitting of the cohesive parameters, there appears to be limitations in transferring these results to other hydrogen systems. Agreement may be improved by appropriately identifying the required input parameters for the particular system under study.

show abstract

Section: Practical Applications Of the Coupled Cohesive Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures

Jemblie

Olden

Akselsen

2017

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

show abstract

“…The embrittling process [17] is related to the interaction of atomic hydrogen with interatomic bonds, and when the cohesive strength of the material is overcome, crack propagation occurs, which refers to the I mode of crack growth according to mechanical fracture. At the crack tip, the presence of a high pressure gradient increases the solubility of hydrogen in the lattice due to lattice expansion, resulting in a hydrogen flux towards this region.…”

Section: Discussionmentioning

confidence: 99%

Investigation of Mechanical Tests for Hydrogen Embrittlement in Automotive PHS Steels

Valentini

Tedesco

Corsinovi³

et al. 2019

Metals

View full text Add to dashboard Cite

The problem of hydrogen embrittlement in ultra-high-strength steels is well known. In this study, slow strain rate, four-point bending, and permeation tests were performed with the aim of characterizing innovative materials with an ultimate tensile strength higher than 1000 MPa. Hydrogen uptake, in the case of automotive components, can take place in many phases of the manufacturing process: during hot stamping, due to the presence of moisture in the furnace atmosphere, high-temperature dissociation giving rise to atomic hydrogen, or also during electrochemical treatments such as cataphoresis. Moreover, possible corrosive phenomena could be a source of hydrogen during an automobile’s life. This series of tests was performed here in order to characterize two press-hardened steels (PHS)—USIBOR 1500® and USIBOR 2000®—to establish a correlation between ultimate mechanical properties and critical hydrogen concentration.

show abstract

“…Since HAC inherently involves crack initiation and propagation, it is inevitable that both must be modelled numerically to estimate pipe strength when HAC is involved. Models for this purpose have been developed, coupling hydrogen diffusion and the finite element method [40,51] but the final goal of estimation the cracking rate and the lifetime of engineering components seems to remain elusive [37]. One of the reasons for this is the need to estimate values for highly uncertain parameters such as the accessibility of pressurized hydrogen pressure to the interior of the crack.…”

Section: Introductionmentioning

confidence: 99%

Capacity of pitting corroded pipes under hydrogen assisted cracking

Rajabipour¹,

Melchers²

2015

International Journal of Hydrogen Energy

View full text Add to dashboard Cite

Pipe strength a b s t r a c tSteel pipes used in the oil and gas industry when subject to corrosion pitting may fail as a result of internal pressure and metal cracking influenced by hydrogen embrittlement. The progressive shape of the crack, including at the instant of failure, is predicted under increasing internal pressure. It is proposed that when hydrogen-assisted cracking (HAC) is involved the shape of the crack front may be estimated from a parallel numerical analyses in the absence of HAC. The theory for this is outlined and an example given.

show abstract

Coupling aspects in the simulation of hydrogen-induced stress-corrosion cracking

Cited by 36 publications

References 33 publications

A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures

A review of cohesive zone modelling as an approach for numerically assessing hydrogen embrittlement of steel structures

Investigation of Mechanical Tests for Hydrogen Embrittlement in Automotive PHS Steels

Capacity of pitting corroded pipes under hydrogen assisted cracking

Contact Info

Product

Resources

About