# Distinct impacts of hydrogen and carbon on thermally activated dislocation motion in Fe-Cr-Ni austenitic steel

https://mdr.nims.go.jp/datasets/3a711a13-0b4f-4e55-a642-57c834485ee2

## File

- [Nishida et al. (2026)_Scripta Materialia.pdf](https://mdr.nims.go.jp/filesets/475bcabc-d1a6-44d5-803a-27099cb2e703/download) ([Detail](https://mdr.nims.go.jp/filesets/475bcabc-d1a6-44d5-803a-27099cb2e703.md))

## Id

3a711a13-0b4f-4e55-a642-57c834485ee2

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-11-27T04:27:49.144747Z

## Updated at

2025-11-28T03:30:04.028974Z

## Published at

2025-11-28T03:24:16.234363Z

## Doi



## First published url

https://doi.org/10.1016/j.scriptamat.2025.117111

## Date published

2025-11-22

## Recorded date published

2026-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Distinct impacts of hydrogen and carbon on thermally activated dislocation
    motion in Fe-Cr-Ni austenitic steel
  title_type: original
  lang: en

## Description

- description: Plastic flow behavior and strain rate sensitivity, S, of Fe-15Cr-15Ni
    (mass%) austenitic steel, alloyed with either hydrogen or carbon, were evaluated
    by tensile and stress relaxation tests at ambient temperature. The effects of
    these two interstitial elements on solid solution-hardening and thermally activated
    dislocation motion were compared in terms of Haasen plot—S versus flow stress.
    Both hydrogen and carbon exhibited solid solution-hardening of the same order
    of magnitude, increasing S proportionally with their concentrations. However,
    their ability to increase S was distinct. Hydrogen caused a much steeper increase
    in S, acting as extremely localized obstacles resisting dislocation motion. In
    contrast, despite exhibiting comparable solid solution-hardening, carbon led to
    an order of magnitude smaller increase in S than hydrogen. This result demonstrates
    a relatively long-range and less rate-sensitive nature of carbon, which is totally
    different from hydrogen in its obstacle character.
  description_type: abstract
  lang: und

## Creator

- name: Haruki Nishida
  role: author
  organization: National Institute for Materials Science
- name: Yuhei Ogawa
  role: author
  orcid: https://orcid.org/0000-0003-2713-9822
  organization: National Institute for Materials Science
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Thermally activated processes
  schema: not_defined
- subject: Strain rate sensitivity
  schema: not_defined
- subject: Hydrogen
  schema: not_defined
- subject: Carbon
  schema: not_defined
- subject: Austenitic steels
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Scripta Materialia
  issn: '13596462'
  volume: '273'
  article_number: '117111'

## Conference



## Related item



## Funding

- identifier: 24K17180
  funder_name: Japan Society for the Promotion of Science
- identifier: '0371199-A'
  funder_name: Iketani Science and Technology Foundation

## 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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## Custom property



## Fileset

- id: 475bcabc-d1a6-44d5-803a-27099cb2e703
  filename: Nishida et al. (2026)_Scripta Materialia.pdf
  content_type: application/pdf
  size: 4763639
  md5: 30e16bec88b7bba63c5a0ef863d52d86

## Thumbnail

fileset_id: 475bcabc-d1a6-44d5-803a-27099cb2e703
filename: Nishida et al. (2026)_Scripta Materialia.pdf