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Effect of hydrogen on nanoindentation behavior of heat treated selective laser melted 316L stainless steel

Ali Nabizada (UGent) , Lisa Claeys (UGent) , Kim Verbeken (UGent) and Tom Depover (UGent)
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Abstract
Selective Laser Melting (SLM) is an increasingly advantageous Additive Manufacturing (AM) technique for fabricating intricate components with potential applications in hydrogen storage and transport. Austenitic stainless steels (ASS) produced via SLM exhibit enhanced mechanical properties when compared to their conventionally manufactured (CM) counterparts. Nevertheless, the response of ASS to hydrogen exposure remains uncertain and requires further investigation. The interaction of hydrogen with heat-treated SLM 316L ASS was examined through exposing the net-shaped specimens to cathodic electrochemical hydrogen charging and nanoindentation loading tests correlated with Electron BackScatter Diffraction (EBSD) analysis. Thermal Desorption Spectroscopy (TDS) and melt extraction are used to evaluate the diffusivity and solubility of hydrogen, respectively. The low diffusion coefficient of hydrogen arising from the crystallographic and microstructural properties of SLM parts led to a restricted depth of hydrogen penetration. Therefore, nanoindentation, being a surface-based methodology, offers an effective means to assess the impact of hydrogen. The charged samples exhibited an observed enhancement in nanohardness, which can be attributed to the hydrogen-increased lattice friction and pinning effect. An explicit correlation between nanohardness displacement and grain orientation was observed for grain orientations close to <001>, <101>, and <111> parallel to building direction. This correlation was explained by considering the role of the different deformation mechanisms, solidification structure and dislocation density affecting the nanoindentation behavior.

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MLA
Nabizada, Ali, et al. “Effect of Hydrogen on Nanoindentation Behavior of Heat Treated Selective Laser Melted 316L Stainless Steel.” EUROCORR 2023, European Corrosion Congress, Proceedings, 2023.
APA
Nabizada, A., Claeys, L., Verbeken, K., & Depover, T. (2023). Effect of hydrogen on nanoindentation behavior of heat treated selective laser melted 316L stainless steel. EUROCORR 2023, European Corrosion Congress, Proceedings. Presented at the EUROCORR 2023,  European Corrosion Congress, Brussels, Belgium.
Chicago author-date
Nabizada, Ali, Lisa Claeys, Kim Verbeken, and Tom Depover. 2023. “Effect of Hydrogen on Nanoindentation Behavior of Heat Treated Selective Laser Melted 316L Stainless Steel.” In EUROCORR 2023, European Corrosion Congress, Proceedings.
Chicago author-date (all authors)
Nabizada, Ali, Lisa Claeys, Kim Verbeken, and Tom Depover. 2023. “Effect of Hydrogen on Nanoindentation Behavior of Heat Treated Selective Laser Melted 316L Stainless Steel.” In EUROCORR 2023, European Corrosion Congress, Proceedings.
Vancouver
1.
Nabizada A, Claeys L, Verbeken K, Depover T. Effect of hydrogen on nanoindentation behavior of heat treated selective laser melted 316L stainless steel. In: EUROCORR 2023, European Corrosion Congress, Proceedings. 2023.
IEEE
[1]
A. Nabizada, L. Claeys, K. Verbeken, and T. Depover, “Effect of hydrogen on nanoindentation behavior of heat treated selective laser melted 316L stainless steel,” in EUROCORR 2023, European Corrosion Congress, Proceedings, Brussels, Belgium, 2023.
@inproceedings{01HCJ3P003R3JZBWFXVTB1W0BQ,
  abstract     = {{Selective Laser Melting (SLM) is an increasingly advantageous Additive Manufacturing (AM)
technique for fabricating intricate components with potential applications in hydrogen storage and
transport. Austenitic stainless steels (ASS) produced via SLM exhibit enhanced mechanical
properties when compared to their conventionally manufactured (CM) counterparts. Nevertheless,
the response of ASS to hydrogen exposure remains uncertain and requires further investigation.
The interaction of hydrogen with heat-treated SLM 316L ASS was examined through exposing
the net-shaped specimens to cathodic electrochemical hydrogen charging and nanoindentation
loading tests correlated with Electron BackScatter Diffraction (EBSD) analysis. Thermal
Desorption Spectroscopy (TDS) and melt extraction are used to evaluate the diffusivity and
solubility of hydrogen, respectively. The low diffusion coefficient of hydrogen arising from the
crystallographic and microstructural properties of SLM parts led to a restricted depth of hydrogen
penetration. Therefore, nanoindentation, being a surface-based methodology, offers an effective
means to assess the impact of hydrogen. The charged samples exhibited an observed enhancement
in nanohardness, which can be attributed to the hydrogen-increased lattice friction and pinning
effect. An explicit correlation between nanohardness displacement and grain orientation was
observed for grain orientations close to <001>, <101>, and <111> parallel to building direction.
This correlation was explained by considering the role of the different deformation mechanisms,
solidification structure and dislocation density affecting the nanoindentation behavior.}},
  author       = {{Nabizada, Ali and Claeys, Lisa and Verbeken, Kim and Depover, Tom}},
  booktitle    = {{EUROCORR 2023, European Corrosion Congress, Proceedings}},
  language     = {{eng}},
  location     = {{Brussels, Belgium}},
  pages        = {{5}},
  title        = {{Effect of hydrogen on nanoindentation behavior of heat treated selective laser melted 316L stainless steel}},
  url          = {{https://www.eurocorr2023.org/}},
  year         = {{2023}},
}