Article Quantitative analysis of local plasticity accompanying hydrogen-related fracture in low-carbon martensitic steel

Xiaodong Lan SAMURAI ORCID ; Kazuho Okada SAMURAI ORCID ; Ivan Gutierrrez-Urrutia SAMURAI ORCID ; Akinobu Shibata SAMURAI ORCID

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Xiaodong Lan, Kazuho Okada, Ivan Gutierrrez-Urrutia, Akinobu Shibata. Quantitative analysis of local plasticity accompanying hydrogen-related fracture in low-carbon martensitic steel. International Journal of Hydrogen Energy. 2023, 50 (), 333-341. https://doi.org/10.1016/j.ijhydene.2023.10.273
SAMURAI

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(abstract)

In this study, the local plasticity accompanying hydrogen-related fracture in a low-carbon martensitic steel was quantitatively investigated by correlative microscopy analysis combining digital image correlation technique and electron backscatter diffraction. The results revealed that strain localization occurred mainly in the bulk of martensite blocks and at prior austenite grain boundaries, both with and without the presence of hydrogen. Moreover, hydrogen enhanced strain localization during deformation and facilitated crack nucleation and propagation. The quantitative analysis showed that the hydrogen-related quasi-cleavage cracking was closely related to the local plastic deformation, and increasing hydrogen content decreased the local strain level required for quasi-cleavage cracking. It was found that strain localization also occurred around the intergranular cracks, suggesting that hydrogen-induced intergranular cracking was not a classical simple decohesion process and strain localization was involved in the sequence of hydrogen-induced intergranular cracking. These findings shed light on the understanding of the intrinsic nature of hydrogen embrittlement.

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Keyword: Hydrogen embrittlement, Martensite, Local plasticity, Electron backscatter diffraction (EBSD), Digital image correlation (DIC)

Date published: 2023-11-08

Publisher: Elsevier BV

Journal:

  • International Journal of Hydrogen Energy (ISSN: 03603199) vol. 50 p. 333-341

Funding:

  • Japan Society for the Promotion of Science JP22K18910
  • Japan Society for the Promotion of Science JP23H01717
  • Japan Society for the Promotion of Science JP23K13541
  • Ministry of Education, Culture, Sports, Science and Technology JPMXP1122684766
  • Japan Science and Technology Agency
  • Iketani Science and Technology Foundation 0351190-A
  • Precursory Research for Embryonic Science and Technology JPMJPR2096

Manuscript type: Publisher's version (Version of record)

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First published URL: https://doi.org/10.1016/j.ijhydene.2023.10.273

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Updated at: 2024-11-21 16:31:07 +0900

Published on MDR: 2024-11-21 16:31:08 +0900

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