# Effects of prior austenite grain size on hydrogen embrittlement behavior in high-strength martensitic steel

https://mdr.nims.go.jp/datasets/1c8b46d9-a2d8-42fb-9398-8fdc16b71c6f

## File

- [1-s2.0-S0921509325017630-main.pdf](https://mdr.nims.go.jp/filesets/0e6a839a-984f-4142-81e9-8aa4c45949eb/download) ([Detail](https://mdr.nims.go.jp/filesets/0e6a839a-984f-4142-81e9-8aa4c45949eb.md))

## Id

1c8b46d9-a2d8-42fb-9398-8fdc16b71c6f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-12-03T03:48:17.706964Z

## Updated at

2025-12-03T07:30:03.755257Z

## Published at

2025-12-03T07:24:02.781133Z

## Doi



## First published url

https://doi.org/10.1016/j.msea.2025.149539

## Date published

2025-11-29

## Recorded date published

2026-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effects of prior austenite grain size on hydrogen embrittlement behavior
    in high-strength martensitic steel
  title_type: original
  lang: en

## Description

- description: 'The present study investigates the effects of prior austenite grain
    (PAG) size on hydrogen embrittlement behavior in high-strength martensitic steel
    utilizing slow strain rate tensile tests integrated with digital image correlation
    (DIC) and X-ray computed tomography analyses. The results demonstrate that PAG
    refinement significantly improves the hydrogen embrittlement resistance under
    a similar hydrogen level. DIC analysis reveals that the susceptibility to hydrogen
    embrittlement originates from the plastic deformation related to the lath martensite
    microstructure. PAG refinement mitigates the microstructure-related strain localization,
    thereby enhancing the hydrogen embrittlement resistance. Additionally, PAG refinement
    increases the apparent fracture toughness by promoting greater plastic work and
    enhancing crack meandering/branching, though the latter effect peaks at a medium
    PAG size. The enhanced resistance to hydrogen embrittlement thus could be attributed
    to several factors: reduced strain localization, lower local hydrogen concentration
    per unit area of PAG boundaries, frequent deflection of intergranular cracks,
    and an increased density of high-angle boundaries that impede quasi-cleavage cracks—all
    facilitated by PAG refinement.'
  description_type: abstract
  lang: und

## Creator

- name: Xiaodong Lan
  role: author
  orcid: https://orcid.org/0000-0002-7075-1753
- name: Kazuho Okada
  role: author
  orcid: https://orcid.org/0000-0003-0183-4528
- name: Ivan Gutierrez-Urrutia
  role: author
  orcid: https://orcid.org/0000-0003-1438-3703
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Martensitic steel
  schema: not_defined
- subject: Hydrogen embrittlement
  schema: not_defined
- subject: Prior austenite grain size
  schema: not_defined
- subject: Crack morphology
  schema: not_defined
- subject: Three-dimensional analysis
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: 'Materials Science and Engineering: A'
  issn: '09215093'
  volume: '950'
  article_number: '149539'

## Conference



## Related item



## Funding

- identifier: JP23H01717
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K13541
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMXP1122684766
  funder_name: Ministry of Education, Culture, Sports, Science and Technology
- identifier: JP24K01221
  funder_name: Japan Society for the Promotion of Science
- identifier: JP22K18910
  funder_name: Japan Society for the Promotion of Science

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



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## Fileset

- id: 0e6a839a-984f-4142-81e9-8aa4c45949eb
  filename: 1-s2.0-S0921509325017630-main.pdf
  content_type: application/pdf
  size: 16628157
  md5: 9967bef75329b01b69bdde47bf962b29

## Thumbnail

fileset_id: 0e6a839a-984f-4142-81e9-8aa4c45949eb
filename: 1-s2.0-S0921509325017630-main.pdf