# Study of the influence of hydrogen on strain hardening and strain localization in a Fe-19Ni-24Cr austenitic steel through quantitative dislocation structure analysis

https://mdr.nims.go.jp/datasets/be7bae7d-7f50-4559-82aa-f82d51302192

## File

- [1-s2.0-S1359645426001849-main.pdf](https://mdr.nims.go.jp/filesets/9d0b1213-7f50-4124-bb49-224db6bd8f2e/download) ([Detail](https://mdr.nims.go.jp/filesets/9d0b1213-7f50-4124-bb49-224db6bd8f2e.md))

## Id

be7bae7d-7f50-4559-82aa-f82d51302192

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-03-27T00:47:44.267493Z

## Updated at

2026-03-27T01:55:01.014713Z

## Published at

2026-03-27T03:22:36.707528Z

## Doi



## First published url

https://doi.org/10.1016/j.actamat.2026.122078

## Date published

2026-03-07

## Recorded date published

2026-5

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Study of the influence of hydrogen on strain hardening and strain localization
    in a Fe-19Ni-24Cr austenitic steel through quantitative dislocation structure
    analysis
  title_type: original
  lang: en

## Description

- description: The evaluation of hydrogen's impact on key variables of dislocation
    structures—such as scale and boundary thickness/misorientation—in Fe-Ni-Cr austenitic
    steels offers deeper insight into the influence of hydrogen on deformation behavior.
    This understanding can aid in designing steels with enhanced resistance to hydrogen
    embrittlement. In this study, we examined the interplay among hydrogen, dislocation
    structure, strain hardening, and strain localization in a Fe-19Ni-24Cr (wt. %)
    austenitic steel through quantitative dislocation structure analysis. The evaluation
    of strain hardening by a dislocation-structure-based statistical model clarifies
    the individual roles of dislocation cells, cell blocks, and dense dislocation
    walls in the hardening process. We find that the impact of elastic shielding on
    key variables of dislocation structure and the hardening parameter associated
    with dislocation-forest hardening is limited, leading to only slight variations
    in hardening mechanisms. The hardening mechanism most dependent on hydrogen is
    solid-solution strengthening. Additionally, this study uncovers several hydrogen-related
    effects associated with the activation of secondary dislocation structures and
    strain localization at cell block boundaries, proposing a dislocation-based model
    that correlates the observed phenomena. These results provide a comprehensive
    understanding of the influence of hydrogen on dislocation-based processes controlling
    the deformation behavior and hardening in Fe-Ni-Cr austenitic steels.
  description_type: abstract
  lang: und

## Creator

- name: Ivan Gutiérrez-Urrutia
  role: author
  orcid: https://orcid.org/0000-0003-1438-3703
- name: Yuhei Ogawa
  role: author
  orcid: https://orcid.org/0000-0003-2713-9822
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Austenitic steel
  schema: not_defined
- subject: Hydrogen
  schema: not_defined
- subject: Dislocation structure
  schema: not_defined
- subject: Strain hardening
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

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## Embargo



## Journal

- title: Acta Materialia
  issn: '13596454'
  volume: '309'
  article_number: '122078'

## Conference



## Related item



## Funding

- identifier: 25K08261
  funder_name: Japan Society for the Promotion of Science
- identifier: 24K17180
  funder_name: Japan Society for the Promotion of Science

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## Fileset

- id: 9d0b1213-7f50-4124-bb49-224db6bd8f2e
  filename: 1-s2.0-S1359645426001849-main.pdf
  content_type: application/pdf
  size: 19643492
  md5: a905cbd4745c295c0b6cac45ddc640e4

## Thumbnail

fileset_id: 9d0b1213-7f50-4124-bb49-224db6bd8f2e
filename: 1-s2.0-S1359645426001849-main.pdf