# Improving hydrogen embrittlement resistance in high-strength martensitic steels via thermomechanical processing

https://mdr.nims.go.jp/datasets/dc59edfd-d2fd-4ee9-a053-3e68d90888e9

## File

- [Improving hydrogen embrittlement resistance in high-strength martensitic steels via thermomechanical processing.pdf](https://mdr.nims.go.jp/filesets/cddbaf1d-e063-4156-a8de-498521a1e31d/download) ([Detail](https://mdr.nims.go.jp/filesets/cddbaf1d-e063-4156-a8de-498521a1e31d.md))

## Id

dc59edfd-d2fd-4ee9-a053-3e68d90888e9

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-06-13T01:02:19.232873Z

## Updated at

2025-06-13T03:30:26.966893Z

## Published at

2025-06-13T03:22:26.054341Z

## Doi



## First published url

https://doi.org/10.1016/j.scriptamat.2025.116711

## Date published

2025-04-16

## Recorded date published

2025-7

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Improving hydrogen embrittlement resistance in high-strength martensitic
    steels via thermomechanical processing
  title_type: original
  lang: en

## Description

- description: This study proposes a novel approach for architecting dual-phase heterostructure
    to enhance hydrogen embrittlement resistance in high-strength martensitic steels
    while maintaining a tensile strength above 1200 MPa. Through thermomechanical
    processing, a unique dual-phase structure was achieved, characterized by a refined
    martensitic substructure and dynamically transformed ferrite grains along the
    prior austenite grain boundaries (PAGBs). Lowering the deformation temperature
    increased the ferrite volume fraction and the coverage of PAGBs by fine ferrite
    grains, which consequently reduced the area fraction of hydrogen-related intergranular
    fracture. Notably, 60% compression at 700 °C completely suppressed hydrogen-related
    intergranular fracture, demonstrating an exceptional combination of strength and
    ductility even in hydrogen-charged state. The coverage of PAGBs by dynamically
    transformed ferrite was a critical factor in enhancing the hydrogen embrittlement
    resistance, with higher coverage correlating with improved hydrogen embrittlement
    resistance. These findings provide valuable microstructure design concepts for
    high-strength martensitic steels with superior hydrogen embrittlement resistance.
  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: Rintaro Ueji
  role: author
  orcid: https://orcid.org/0000-0001-6969-3165
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hydrogen embrittlement
  schema: not_defined
- subject: Intergranular fracture
  schema: not_defined
- subject: Martensitic steel
  schema: not_defined
- subject: Dynamic ferrite transformation
  schema: not_defined
- subject: Thermomechanical processing
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Scripta Materialia
  issn: '13596462'
  volume: '264'
  article_number: '116711'

## Conference



## Related item



## Funding

- identifier: JPMXP1122684766
  funder_name: Government of Japan 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
- identifier: JP23H01717
  funder_name: Japan Society for the Promotion of Science
- identifier: JP23K13541
  funder_name: Japan Society for the Promotion of Science

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## Specimen



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## Computational method



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## Fileset

- id: cddbaf1d-e063-4156-a8de-498521a1e31d
  filename: Improving hydrogen embrittlement resistance in high-strength martensitic
    steels via thermomechanical processing.pdf
  content_type: application/pdf
  size: 6001726
  md5: 3ae6bf577f7f660e551c99d2c8243bb8

## Thumbnail

fileset_id: cddbaf1d-e063-4156-a8de-498521a1e31d
filename: Improving hydrogen embrittlement resistance in high-strength martensitic
  steels via thermomechanical processing.pdf