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Investigation of the effect of carbon on the reversible hydrogen trapping behavior in lab-cast martensitic Fe-C steels

Margot Pinson (UGent) , Lisa Claeys (UGent) , H. Springer, Vitaliy Bliznuk (UGent) , Tom Depover (UGent) and Kim Verbeken (UGent)
(2022) MATERIALS CHARACTERIZATION. 184.
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Abstract
The present study evaluates the active hydrogen trapping sites of three martensitic Fe-C alloys with a carbon content of 0.2 wt%, 0.4 wt% and 1.1 wt% by thermal desorption spectroscopy (TDS). The absence of additional alloying elements reduces the microstructural complexity and allows focussing on the carbon effects only. The TDS spectra are extrapolated towards cryogenic temperatures, enabling to deconvolute the desorption spectrum in Gaussian curves corresponding with H detrapping from lattice positions, dislocations, high angle grain boundaries and cementite. The activation energy for hydrogen desorption and the amount of H trapped at each site is further profoundly evaluated. It is found that the carbon content controls the amount of hydrogen trapped at dislocations and its activation energy for detrapping decreases with increasing carbon content. The trap density of the high angle grain boundaries is controlled only by the prior austenitic grain size and the corresponding activation energy for H desorption is independent of the carbon content. Hydrogen trapping at cementite was only detected in the samples with the highest carbon content (Fe-1.1C).
Keywords
Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science, Cementite, Dislocation density, High angle grain boundaries, Hydrogen trapping, Martensite, Thermal desorption spectroscopy (TDS), MULTIPHASE STEELS, STRENGTH, EMBRITTLEMENT, IRON, BCC, DEGRADATION, DIFFUSIVITY, CEMENTITE, METALS, TRAPS

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MLA
Pinson, Margot, et al. “Investigation of the Effect of Carbon on the Reversible Hydrogen Trapping Behavior in Lab-Cast Martensitic Fe-C Steels.” MATERIALS CHARACTERIZATION, vol. 184, 2022, doi:10.1016/j.matchar.2021.111671.
APA
Pinson, M., Claeys, L., Springer, H., Bliznuk, V., Depover, T., & Verbeken, K. (2022). Investigation of the effect of carbon on the reversible hydrogen trapping behavior in lab-cast martensitic Fe-C steels. MATERIALS CHARACTERIZATION, 184. https://doi.org/10.1016/j.matchar.2021.111671
Chicago author-date
Pinson, Margot, Lisa Claeys, H. Springer, Vitaliy Bliznuk, Tom Depover, and Kim Verbeken. 2022. “Investigation of the Effect of Carbon on the Reversible Hydrogen Trapping Behavior in Lab-Cast Martensitic Fe-C Steels.” MATERIALS CHARACTERIZATION 184. https://doi.org/10.1016/j.matchar.2021.111671.
Chicago author-date (all authors)
Pinson, Margot, Lisa Claeys, H. Springer, Vitaliy Bliznuk, Tom Depover, and Kim Verbeken. 2022. “Investigation of the Effect of Carbon on the Reversible Hydrogen Trapping Behavior in Lab-Cast Martensitic Fe-C Steels.” MATERIALS CHARACTERIZATION 184. doi:10.1016/j.matchar.2021.111671.
Vancouver
1.
Pinson M, Claeys L, Springer H, Bliznuk V, Depover T, Verbeken K. Investigation of the effect of carbon on the reversible hydrogen trapping behavior in lab-cast martensitic Fe-C steels. MATERIALS CHARACTERIZATION. 2022;184.
IEEE
[1]
M. Pinson, L. Claeys, H. Springer, V. Bliznuk, T. Depover, and K. Verbeken, “Investigation of the effect of carbon on the reversible hydrogen trapping behavior in lab-cast martensitic Fe-C steels,” MATERIALS CHARACTERIZATION, vol. 184, 2022.
@article{8732808,
  abstract     = {{The present study evaluates the active hydrogen trapping sites of three martensitic Fe-C alloys with a carbon content of 0.2 wt%, 0.4 wt% and 1.1 wt% by thermal desorption spectroscopy (TDS). The absence of additional alloying elements reduces the microstructural complexity and allows focussing on the carbon effects only. The TDS spectra are extrapolated towards cryogenic temperatures, enabling to deconvolute the desorption spectrum in Gaussian curves corresponding with H detrapping from lattice positions, dislocations, high angle grain boundaries and cementite. The activation energy for hydrogen desorption and the amount of H trapped at each site is further profoundly evaluated. It is found that the carbon content controls the amount of hydrogen trapped at dislocations and its activation energy for detrapping decreases with increasing carbon content. The trap density of the high angle grain boundaries is controlled only by the prior austenitic grain size and the corresponding activation energy for H desorption is independent of the carbon content. Hydrogen trapping at cementite was only detected in the samples with the highest carbon content (Fe-1.1C).}},
  articleno    = {{111671}},
  author       = {{Pinson, Margot and Claeys, Lisa and Springer, H. and Bliznuk, Vitaliy and Depover, Tom and Verbeken, Kim}},
  issn         = {{1044-5803}},
  journal      = {{MATERIALS CHARACTERIZATION}},
  keywords     = {{Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science,Cementite,Dislocation density,High angle grain boundaries,Hydrogen trapping,Martensite,Thermal desorption spectroscopy (TDS),MULTIPHASE STEELS,STRENGTH,EMBRITTLEMENT,IRON,BCC,DEGRADATION,DIFFUSIVITY,CEMENTITE,METALS,TRAPS}},
  language     = {{eng}},
  pages        = {{8}},
  title        = {{Investigation of the effect of carbon on the reversible hydrogen trapping behavior in lab-cast martensitic Fe-C steels}},
  url          = {{http://doi.org/10.1016/j.matchar.2021.111671}},
  volume       = {{184}},
  year         = {{2022}},
}
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