Enhanced gaseous hydrogen solubility in ferritic and martensitic steels at low temperatures

Drexler, Andreas; Konert, Florian; Sobol, Oded; Rhode, Michael; Domitner, Josef; Sommitsch, Christof; Böllinghaus, Thomas

doi:10.1016/j.ijhydene.2022.09.109

Cited by 11 publications

(14 citation statements)

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“…[61] In many applications such as gas tanks or pipelines, the internal working pressure causes tensile stresses at the surface of the steel components. [19] As tensile stresses are identified to increase the hydrogen solubility, qualification tests in closed autoclaves should also be performed at higher gas pressures to establish equal conditions of hydrogen solubility. The required increase of the effective gas pressure inside of closed autoclaves to ensure conditions equal to real applications ("pressure equivalent") is marked with arrows in Figure 4.…”

Section: Pressure Equivalent For Testing In Autoclave Systemsmentioning

confidence: 99%

“…For that purpose, gaseous hydrogen contents of different low alloyed steels with a ferritic or martensitic matrix were measured and collected from literature. [13,19,48,[51][52][53] A summary of the literature data is given in a tabular form in Appendix. All measurements were performed using the TDA method after high-pressure hydrogen charging of samples in closed autoclave systems.…”

Section: Inverse Parameterization Routinementioning

confidence: 99%

“…This would cause differences in the hydrogen solubility of materials in laboratory conditions (autoclave) and under service conditions. Since the hydrogen solubility is sensitive to mechanical stresses, [ 19 ] the autoclave setup and the sample geometry [ 20 ] can both influence the results of embrittlemen t testing. Another issue is the missing information about the hydrogen solubility of ferritic and martensitic steels at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…A review of measured solution enthalpies of ferritic and martensitic steels revealed an endothermic value around 27 kJ mol −1 . [ 19 ] In other words, the temperature dependency of the solubility of hydrogen in iron and steels causes a negative slope in the Arrhenius graph. This is in contrast to the hydrogen solubility of other metals, such as titanium or vanadium, which have a much higher affinity to hydrogen.…”

Section: Introductionmentioning

confidence: 99%

“…Figure2. Verification of the parameter settings by comparing the calculated total hydrogen solubility with measured hydrogen contents for different materials:[13,19,[51][52][53] a-c) bar diagrams and d) predicted versus measured diagram.…”

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confidence: 99%

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Effect of Tensile Loading and Temperature on the Hydrogen Solubility of Steels at High Gas Pressure

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et al. 2023

steel research int.

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The hydrogen solubility in ferritic and martensitic steels is affected by hydrostatic stress, pressure and temperature. In general, compressive stresses decrease but tensile stresses increase the hydrogen solubility. This important aspect must be considered when qualifying materials for high‐pressure hydrogen applications (e.g., for pipelines or tanks) by using autoclave systems. This work proposes a pressure equivalent for compensating the effect of compressive stresses on the hydrogen solubility inside of closed autoclaves, to achieve solubilities that are equivalent to those in pipelines and tanks subjected to tensile stresses. Moreover, it is shown that the temperature effect becomes critical at low temperatures (e.g., under cryogenic conditions for storing liquid hydrogen). Trapping of hydrogen in the microstructure can increase the hydrogen solubility with decreasing temperature, having a solubility minimum at about room temperature. In order to demonstrate this effect, the generalized law of the hydrogen solubility is parametrized for different steels using measured contents of gaseous hydrogen. The constant parameter sets are verified and critically discussed with respect to the high‐pressure hydrogen experiments.This article is protected by copyright. All rights reserved.

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Section: Pressure Equivalent For Testing In Autoclave Systemsmentioning

confidence: 99%