On the estimation of the diffusion coefficient and distribution of hydrogen in stainless steel

Duportal, Malo; Oudriss, A.; Feaugas, X.; Savall, C.

doi:10.1016/j.scriptamat.2020.05.040

Cited by 21 publications

(4 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast here, the thickness of austenite layers is of the order of 10 nm only. Considering a diffusion coefficient of about 10 -15 m²/s [103] in austenite, the time needed for hydrogen to travel 10 nm is as short as 0.1 s, which is orders of magnitude shorter than the permeation times measured in this study (or than the charging times used before TDS). Thus it seems reasonable in our case to assume that austenite is equilibrated with the surrounding martensite at any time.…”

Section: Discussionmentioning

confidence: 64%

A multi-method approach to the study of hydrogen trapping in a maraging stainless steel: the impact of B2-NiAl precipitates and austenite

Bestautte,

Oudriss,

Lenci

et al. 2023

Corrosion Science

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 64%

A multi-method approach to the study of hydrogen trapping in a maraging stainless steel: the impact of B2-NiAl precipitates and austenite

Bestautte,

Oudriss,

Lenci

et al. 2023

Corrosion Science

View full text Add to dashboard Cite

“…However, full quantification of H is still challenging because the calibration of potential is difficult and the surface condition of the sample plays a crucial role. In many cases, SKPFM is combined with other characterization techniques, for instance, TDS, − glow discharge optical emission spectroscopy, and SIMS, to robustly reveal H distribution and trapping related to microstructural defects. Nevertheless, SKPFM has been primarily applied on fcc metals after H pre-charging because of the slow H diffusivity.…”

Section: Knowledge Base About Hementioning

confidence: 99%

“…In addition, the potential drops more steeply at the interface compared to that inside the matrix and the precipitate, indicating that the interface traps more H than the matrix. So far, SKPFM has been successfully used to determine H distribution in stainless steel, − nickel, aluminum alloy, and palladium . However, full quantification of H is still challenging because the calibration of potential is difficult and the surface condition of the sample plays a crucial role.…”

Section: Knowledge Base About Hementioning

confidence: 99%

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Yu,

Díaz,

et al. 2024

Chem. Rev.

Self Cite

View full text Add to dashboard Cite

Hydrogen is considered a clean and efficient energy carrier crucial for shaping the net-zero future. Large-scale production, transportation, storage, and use of green hydrogen are expected to be undertaken in the coming decades. As the smallest element in the universe, however, hydrogen can adsorb on, diffuse into, and interact with many metallic materials, degrading their mechanical properties. This multifaceted phenomenon is generically categorized as hydrogen embrittlement (HE). HE is one of the most complex material problems that arises as an outcome of the intricate interplay across specific spatial and temporal scales between the mechanical driving force and the material resistance fingerprinted by the microstructures and subsequently weakened by the presence of hydrogen. Based on recent developments in the field as well as our collective understanding, this Review is devoted to treating HE as a whole and providing a constructive and systematic discussion on hydrogen entry, diffusion, trapping, hydrogen–microstructure interaction mechanisms, and consequences of HE in steels, nickel alloys, and aluminum alloys used for energy transport and storage. HE in emerging material systems, such as high entropy alloys and additively manufactured materials, is also discussed. Priority has been particularly given to these less understood aspects. Combining perspectives of materials chemistry, materials science, mechanics, and artificial intelligence, this Review aspires to present a comprehensive and impartial viewpoint on the existing knowledge and conclude with our forecasts of various paths forward meant to fuel the exploration of future research regarding hydrogen-induced material challenges.

show abstract

“…Nevertheless, cathodic hydrogen charging yields metallic materials with a low hydrogen diffusion coefficient and low hydrogen content in an ambient environment. Duportal et al (2020) performed cathodic hydrogen charging on AISI 316L stainless steel (Ni wt%: 12.4%) in an electrolyte solution of sodium hydroxide and ammonium thiocyanate with a high current density of 100 mA/cm 2 at 50 • C [35]. A charging time of 72 h resulted in a hydrogen content of 80 ± 17 wppm.…”

Section: Hydrogen Chargingmentioning

confidence: 99%

Metallic Material Evaluation of Liquid Hydrogen Storage Tank for Marine Application Using a Tensile Cryostat for 20 K and Electrochemical Cell

et al. 2022

View full text Add to dashboard Cite

A series of material tests were performed on cryogenic metallic materials meant for liquid hydrogen storage tanks using a 20 K tensile cryostat and an electrochemical hydrogen-charging apparatus. Mechanical evaluation of the electrochemically hydrogen-charged specimens was performed in a tensile cryostat using helium gas at ambient temperature and cryogenic temperature (20 K). The tensile cryostat was equipped with a vacuum jacket and a G-M cryocooler with gaseous helium. Furthermore, the cathodic electrolysis cell used for charging the specimens was adopted for internal hydrogen conditions with a reflux condenser and heating mantle to increase hydrogen diffusivity. The target materials were austenite stainless steel and aluminum alloy, which are suitable for liquefied natural gas and gaseous hydrogen environments. No significant change in the yield strength and flow stress of the hydrogen-charged specimen up to 20% strain was observed. However, changes in tensile strength and elongation were observed thereafter. Electrochemical hydrogen charging of stainless steel leads to a high concentration of hydrogen on the surface of the specimen. The resulting surface cracks reduced the flow stress. The 20 K tensile test showed discontinuous yielding in the austenitic stainless steel with an abrupt increase in temperature. The mechanical performance of the aluminum alloys improved in terms of strength and elongation. Changes in the mechanical performance and relative area reduction were observed for all the metallic materials at 300 K and 20 K.

show abstract

On the estimation of the diffusion coefficient and distribution of hydrogen in stainless steel

Cited by 21 publications

References 30 publications

A multi-method approach to the study of hydrogen trapping in a maraging stainless steel: the impact of B2-NiAl precipitates and austenite

A multi-method approach to the study of hydrogen trapping in a maraging stainless steel: the impact of B2-NiAl precipitates and austenite

Hydrogen Embrittlement as a Conspicuous Material Challenge─Comprehensive Review and Future Directions

Metallic Material Evaluation of Liquid Hydrogen Storage Tank for Marine Application Using a Tensile Cryostat for 20 K and Electrochemical Cell

Contact Info

Product

Resources

About