# Dislocation-pinning and dynamic strain-aging in hydrogen-alloyed Fe-Cr-Ni austenitic steel at sub-ambient temperatures

https://mdr.nims.go.jp/datasets/e9fae6f4-e63a-45e6-918b-dcd72658a852

## File

- [1-s2.0-S1359645426005586-main.pdf](https://mdr.nims.go.jp/filesets/de71b38e-d096-44e1-b576-0e8b4e649812/download) ([Detail](https://mdr.nims.go.jp/filesets/de71b38e-d096-44e1-b576-0e8b4e649812.md))

## Id

e9fae6f4-e63a-45e6-918b-dcd72658a852

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-25T03:55:14.367408Z

## Updated at

2026-06-25T04:47:18.288222Z

## Published at

2026-06-25T07:28:13.699349Z

## Doi



## First published url

https://doi.org/10.1016/j.actamat.2026.122457

## Date published

2026-06-15

## Recorded date published

2026-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Dislocation-pinning and dynamic strain-aging in hydrogen-alloyed Fe-Cr-Ni
    austenitic steel at sub-ambient temperatures
  title_type: original
  lang: en

## Description

- description: The interaction between solute hydrogen (H) and mobile dislocations
    in Fe-24Cr-19Ni mass% (Type310S) austenitic steel charged with 8500 atomic ppm
    H was investigated by stress relaxation tests conducted over the temperature range
    213–295 K. At ambient condition, H atoms form solute atmospheres that can migrate
    coordinately with moving dislocations. In contrast, the reduced H diffusivity
    at lower temperatures progressively impedes dislocation motion, leading to dynamic
    strain aging (DSA) during the relaxation process, manifested as a retardation
    of thermally activated deformation. As a direct consequence of this dislocation-pinning
    effect, a pronounced yield point emerged upon reloading after relaxation. The
    kinetics of solute atmosphere formation and DSA were further quantified by evaluating
    the exhaustion rate of mobile dislocation density as a function of relaxation
    time. The experimental trends were successfully described using a classical Cottrell
    atmosphere model based on size-misfit interaction, demonstrating that the fundamental
    role of H in governing dislocation mobility is essentially analogous to that of
    other interstitial solute elements.
  description_type: abstract
  lang: und

## Creator

- name: Yuhei Ogawa
  role: author
  orcid: https://orcid.org/0000-0003-2713-9822
- name: Tatsuya Ito
  role: author
- name: Haruki Nishida
  role: author
- name: Osamu Takakuwa
  role: author
- name: Kaneaki Tsuzaki
  role: author
- name: Stefanus Harjo
  role: author
  orcid: https://orcid.org/0000-0001-7386-2398
- 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: Dislocations
  schema: not_defined
- subject: Dynamic strain-aging
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Acta Materialia
  issn: '13596454'
  volume: '316'
  article_number: '122457'

## Conference



## Related item



## Funding

- funder_name: Japan Society for the Promotion of Science
- 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



## Software



## Custom property



## Fileset

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  filename: 1-s2.0-S1359645426005586-main.pdf
  content_type: application/pdf
  size: 8021233
  md5: b76ebfba5e3f5128483efdea6c153616

## Thumbnail

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filename: 1-s2.0-S1359645426005586-main.pdf