Searched for: subject%3A%22hydrogen%255C%2Bembrittlement%22
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TRIGO GALLEGO, ELENA (author)
To mitigate global warming, society must reduce greenhouse gas emissions. The transportation sector is one of the largest energy consumers and greenhouse gas emitters. One way to mitigate the emissions of this sector is to reduce the weight of vehicles using Advanced High Strength Steels (AHSS), particularly dual phase steels (DP). However,...
master thesis 2023
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Winters, Koen (author)
The exposure of certain carbon steels to sour environments can result in severe hydrogen induced cracking (HIC) damage in the oil and gas industry. Current mitigation techniques in this field have low reliability or are not able to provide long-term protection against such damage. Recent advancements in thermal spray technology have resulted in...
master thesis 2023
document
Faucon, L.E.K. (author), Boot, T. (author), Riemslag, A.C. (author), Scott, S.P. (author), Liu, Ping (author), Popovich, V. (author)
In this work, the hydrogen fatigue of pipeline steel X60, its girth welds and weld defects were investigated through in situ fatigue testing. A novel in situ gaseous hydrogen charging fatigue set-up was developed, which involves a sample geometry that mimics a small-scale pipeline with high internal hydrogen gas pressure. The effect of hydrogen...
journal article 2023
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Mohandas, N.K. (author), Giorgini, Alex (author), Vanazzi, Matteo (author), Riemslag, A.C. (author), Scott, S.P. (author), Popovich, V. (author)
This study investigated the in-situ gaseous (under 150 bar) hydrogen embrittlement behaviour of additively manufactured (AM) Inconel 718 produced from sustainable feedstock. Here, sustainable feedstock refers to the Inconel 718 powder produced by vacuum induction melting inert gas atomisation of failed printed parts or waste from CNC machining....
journal article 2023
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Yang, Dae Cheol (author), Song, Sang Yoon (author), Kim, Han Jin (author), Lee, Sang In (author), Dutta, B. (author), Kim, Young Kyun (author), Shim, Jae Hyeok (author), Suh, Jin Yoo (author), Na, Young Sang (author), Sohn, Seok Su (author)
The issue of hydrogen embrittlement (HE) in face-centered (FCC) structured alloys is significant for H storage and transportation application due to unanticipated damage beyond its predicted service life. This unpredictable situation may harm human life and limit hydrogen to a reliable source of renewable energy in industrial fields. Recent...
journal article 2023
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Safyari, Mahdieh (author), Khossossi, N. (author), Meisel, Thomas (author), Dey, P. (author), Prohaska, Thomas (author), Moshtaghi, Masoud (author)
An attractive approach to mitigate hydrogen embrittlement (HE) is to use nano-sized particles to immobilize hydrogen. However, the atomic scale relationship between different particle-matrix characteristics in aluminum alloys and the susceptibility to HE is unknown. In this study, the effects of interactions between various interfaces and...
journal article 2023
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Mohandas, Naveen (author)
Laser powder bed fusion (L-PBF) is an additive manufacturing (AM) technology that has been gaining a lot of interest as it allows to produce parts with complex geometries and eliminate expensive tooling. Unlike the conventional manufacturing processes where material is removed to make the final component; AM part is manufactured layer-wise as...
master thesis 2022
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Faucon, Lorenzo (author)
Hydrogen as an alternative energy source has risen in popularity due to increased environmental awareness. Existing natural gas infrastructure is considered as a means to transport hydrogen, due to practicality and financial aspects. However, hydrogen can deteriorate the fatigue behaviour and thus induce premature failure. Since fatigue is a...
master thesis 2022
document
Karpenko, O. (author), Oterkus, Selda (author), Oterkus, Erkan (author)
This study presents a numerical approach for modelling the Corrosion Fatigue Crack Growth (CFCG) in conventional casting and additively manufactured Ti6Al4V alloys. The proposed numerical model, based on Peridynamics (PD), combines the PD Fatigue Crack Growth (FCG) model and PD diffusion model in order to couple the mechanical and diffusion...
journal article 2022
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Vercruysse, Florian (author), Claeys, Lisa (author), Depover, Tom (author), Verleysen, Patricia (author), Petrov, R.H. (author), Verbeken, Kim (author)
In the present study, the effect of Niobium (Nb) on the hydrogen embrittlement resistance of Quenched and Partitioning (Q&P) steel is investigated. For this purpose, the hydrogen uptake level and its impact on the mechanical properties of a Nb-free and a 0.024 wt% Nb Q&P steel are thoroughly analysed. The hydrogen trapping capacity is...
journal article 2022
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Hussein, A.H.A. (author), Krom, Alfons H.M. (author), Dey, P. (author), Sunnardianto, G.K. (author), Moultos, O. (author), Walters, C.L. (author)
In this study, we investigate the effect of the heterogeneous micromechanical stress fields resulting from the grain-scale anisotropy on the redistribution of hydrogen using a diffusion coupled crystal plasticity model. A representative volume element with periodic boundary conditions was used to model a synthetic microstructure. The effect...
journal article 2021
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Boot, T. (author), Riemslag, A.C. (author), Reinton, T.E. (author), Liu, P. (author), Walters, C.L. (author), Popovich, V. (author)
This work discusses the design and demonstration of an in-situ test setup for testing pipeline steels in a high pressure gaseous hydrogen (H2) environment. A miniature hollow pipe-like tensile specimen was designed that acts as the gas containment volume during the test. Specific areas of the specimen can be forced to fracture by selective...
journal article 2021
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Boot, T. (author), Riemslag, A.C. (author), Reinton, T.E. (author), Liu, Ping (author), Walters, C.L. (author), Popovich, V. (author)
With fossil fuels being phased out and growing global interest in a hydrogen economy, there is demand for re-purposing existing pipelines for transportation of hydrogen gas. However, hydrogen embrittlement (HE) can limit pipeline steel’s performance. In this study, the effect of hydrogen on the mechanical properties of an X60 base metal ...
conference paper 2021
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Boot, Tim (author)
With fossil fuels being phased out and growing global interest in a hydrogen economy, there is demand for re-purposing existing pipelines for transportation of hydrogen gas. However, hydrogen is known to have adverse affects on the properties of steels. Hydrogen will dissolve in the steel matrix and contribute to a reduction of mechanical...
master thesis 2020
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Sagar, S. (author)
The formability of Advanced High Strength Steels is critical for their usability in automotive applications. It has been observed that the presence of hydrogen, even in concentrations of the order of 1 ppm, leads to a considerable drop in formability. Hydrogen atoms may get absorbed during steel-making and are known to get trapped at various...
master thesis 2020
document
Wanhill, R.J.H. (author)
An example test plan for sustained load fracture control verification is presented. Two sustained load fracture problems have been chosen: stress corrosion cracking of titanium alloy Ti-6Al-4V, and gaseous hydrogen embrittlement of the nickel-base superalloy Inconel 718. The plan is worked out in detail, including materials and heat treatments,...
report 1989
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Wanhill, R.J.H. (author)
The opportunities for sustained load fracture control in spacecraft are indicated. Emphasis is given to verification by small-scale laboratory testing.
report 1989
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Wanhill, R.J.H. (author), Schra, L. (author)
The economic life of airframes is largely determined by widespread initiation and growth of fatigue cracks at low stress intensities. Any factor reducing the low stress intensity fatigue damage rate could, if controllable, increase the structural durability. One such factor is corrosion fatigue crack arrest. Corrosion product build-up within a...
report 1988
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van Leeuwen, H.P. (author)
The concept of fugacity is explained. Application of compressibility and fugacity data in hydrogen embrittlement calculations is discussed. Equations of state are reviewed. Compressibility factors and fugacity coefficients are calculated. A best estimate is proposed.
report 1983
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van Leeuwen, H.P. (author), de Rijk, P. (author), Boogers, J.A.M. (author), Huisman, H.N. (author), Wanhill, R.J.H. (author)
Circumferentially notched round specimens of 4340 type steel have been plated in a galvanic bath known to be embrittling. The specimens were reclaimed by stripping and baking. Half the specimens were replated in a non-embrittling bath. Reclamation did not remove all traces of hydrogen embrittlement, but raised the threshold stress to such a...
report 1979
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