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The role of titanium and vanadium based precipitates on hydrogen induced degradation of ferritic materials

Aurélie Laureys (UGent) , Lisa Claeys (UGent) , Tim De Seranno (UGent) , Tom Depover (UGent) , Emilie Van den Eeckhout (UGent) , Roumen Petrov (UGent) and Kim Verbeken (UGent)
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Abstract
The hydrogen induced damage of generic Fe-C-Ti and Fe-C-V ferritic alloys was investigated to assess the influence of precipitates on the hydrogen sensitivity of a material. The precipitates, formed during heat treatment, were evaluated by scanning transmission electron microscopy (STEM). The hydrogen/material interaction was evaluated by: 1) melt and hot extraction to determine the total and diffusible hydrogen content, respectively, 2) permeation experiments to calculate the diffusion coefficient, 3) thermal desorption spectroscopy to determine the hydrogen trapping characteristics of the materials. Furthermore, two different types of hydrogen induced damage were evaluated, i.e. hydrogen assisted cracking and blistering, resulting from electrochemical hydrogen charging with and without the application of an external load, respectively. Evaluation of the hydrogen induced damage and the role of the precipitates was performed by combining optical microscopy, scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD). An important though divertive role of diffusible hydrogen is observed in both damage mechanisms for the investigated microstructures. On the one hand, a large amount of diffusible hydrogen compared to strongly trapped hydrogen promotes hydrogen assisted cracking of materials, while on the other hand, the blistering phenomenon is delayed under such conditions.
Keywords
Hydrogen induced damage, EBSD, Precipitate, SEM, Hydrogen blistering, HIGH-STRENGTH STEELS, INDUCED CRACKING, MECHANICAL-PROPERTIES, QUANTITATIVE-ANALYSIS, TRAPPING BEHAVIOR, PURE IRON, EMBRITTLEMENT, FE, ALLOYS, BLISTER

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MLA
Laureys, Aurélie, Lisa Claeys, Tim De Seranno, et al. “The Role of Titanium and Vanadium Based Precipitates on Hydrogen Induced Degradation of Ferritic Materials.” MATERIALS CHARACTERIZATION 144 (2018): 22–34. Print.
APA
Laureys, Aurélie, Claeys, L., De Seranno, T., Depover, T., Van den Eeckhout, E., Petrov, R., & Verbeken, K. (2018). The role of titanium and vanadium based precipitates on hydrogen induced degradation of ferritic materials. MATERIALS CHARACTERIZATION, 144, 22–34.
Chicago author-date
Laureys, Aurélie, Lisa Claeys, Tim De Seranno, Tom Depover, Emilie Van den Eeckhout, Roumen Petrov, and Kim Verbeken. 2018. “The Role of Titanium and Vanadium Based Precipitates on Hydrogen Induced Degradation of Ferritic Materials.” Materials Characterization 144: 22–34.
Chicago author-date (all authors)
Laureys, Aurélie, Lisa Claeys, Tim De Seranno, Tom Depover, Emilie Van den Eeckhout, Roumen Petrov, and Kim Verbeken. 2018. “The Role of Titanium and Vanadium Based Precipitates on Hydrogen Induced Degradation of Ferritic Materials.” Materials Characterization 144: 22–34.
Vancouver
1.
Laureys A, Claeys L, De Seranno T, Depover T, Van den Eeckhout E, Petrov R, et al. The role of titanium and vanadium based precipitates on hydrogen induced degradation of ferritic materials. MATERIALS CHARACTERIZATION. 2018;144:22–34.
IEEE
[1]
A. Laureys et al., “The role of titanium and vanadium based precipitates on hydrogen induced degradation of ferritic materials,” MATERIALS CHARACTERIZATION, vol. 144, pp. 22–34, 2018.
@article{8571326,
  abstract     = {The hydrogen induced damage of generic Fe-C-Ti and Fe-C-V ferritic alloys was investigated to assess the influence of precipitates on the hydrogen sensitivity of a material. The precipitates, formed during heat treatment, were evaluated by scanning transmission electron microscopy (STEM). The hydrogen/material interaction was evaluated by: 1) melt and hot extraction to determine the total and diffusible hydrogen content, respectively, 2) permeation experiments to calculate the diffusion coefficient, 3) thermal desorption spectroscopy to determine the hydrogen trapping characteristics of the materials. Furthermore, two different types of hydrogen induced damage were evaluated, i.e. hydrogen assisted cracking and blistering, resulting from electrochemical hydrogen charging with and without the application of an external load, respectively. Evaluation of the hydrogen induced damage and the role of the precipitates was performed by combining optical microscopy, scanning electron microscopy (SEM), and electron backscatter diffraction (EBSD). An important though divertive role of diffusible hydrogen is observed in both damage mechanisms for the investigated microstructures. On the one hand, a large amount of diffusible hydrogen compared to strongly trapped hydrogen promotes hydrogen assisted cracking of materials, while on the other hand, the blistering phenomenon is delayed under such conditions.},
  author       = {Laureys, Aurélie and Claeys, Lisa and De Seranno, Tim and Depover, Tom and Van den Eeckhout, Emilie and Petrov, Roumen and Verbeken, Kim},
  issn         = {1044-5803},
  journal      = {MATERIALS CHARACTERIZATION},
  keywords     = {Hydrogen induced damage,EBSD,Precipitate,SEM,Hydrogen blistering,HIGH-STRENGTH STEELS,INDUCED CRACKING,MECHANICAL-PROPERTIES,QUANTITATIVE-ANALYSIS,TRAPPING BEHAVIOR,PURE IRON,EMBRITTLEMENT,FE,ALLOYS,BLISTER},
  language     = {eng},
  pages        = {22--34},
  title        = {The role of titanium and vanadium based precipitates on hydrogen induced degradation of ferritic materials},
  url          = {http://dx.doi.org/10.1016/j.matchar.2018.06.030},
  volume       = {144},
  year         = {2018},
}

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