Blar i Institutt for maskinteknikk og produksjon på tidsskrift "International journal of hydrogen energy"
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A coupled diffusion and cohesive zone modelling approach for numerically assessing hydrogen embrittlement of steel structures
(Journal article; Peer reviewed, 2017)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 ... -
Cohesive zone modelling of hydrogen induced cracking on the interface of clad steel pipes
(Journal article; Peer reviewed, 2017)A coupled finite element hydrogen diffusion and cohesive zone modelling approach has been applied to simulate hydrogen induced fracture initiation in a hot rolled bonded clad steel pipe. The results are compared to ... -
Effect of different microstructural features on the hydrogen embrittlement susceptibility of alloy 718
(Journal article; Peer reviewed, 2018)Due to its high strength and acceptable corrosion resistance, Alloy 718 is a viable material for the use in subsea applications. The alloy's susceptibility to hydrogen embrittlement is however limiting its viability. In ... -
Effect of hydrogen on dislocation nucleation in alloy 718
(Journal article; Peer reviewed, 2017)In situ electrochemical nanoindentation has been used to study the effect of hydrogen on the nanomechanical response of Alloy 718. Observations show that hardness increase as a result of hydrogen charging. Also, the hydrogen ... -
Effect of nickel on hydrogen permeation in ferritic/ pearlitic low alloy steels
(Journal article; Peer reviewed, 2018)Nickel offers several beneficial effects as an alloying element to low alloy steels. However, it is, in the oil and gas industry, limited by part 2 of the ISO 15156 standard to a maximum of 1 wt% due to sulfide stress ... -
In situ small-scale hydrogen embrittlement testing made easy: An electrolyte for preserving surface integrity at nano-scale during hydrogen charging
(Journal article; Peer reviewed, 2018)An electrolyte for electrochemical hydrogen charging of corrosion-susceptible alloys is developed, which preserves the surface integrity at nano-scale by minimizing the surface roughness alternation. To assure the formation ... -
Insight into hydrogen effect on a duplex medium-Mn steel revealed by in-situ nanoindentation test.
(Peer reviewed; Journal article, 2019)Medium-Mn steel is the newly developed steel acting as a promising candidate of the 3rd-generation advanced high strength steels. In the present study, the effect of hydrogen on the mechanical behavior and martensite ...