# From embrittlement to enhancement: pathway toward using hydrogen as a beneficial interstitial solute element in austenitic steels

https://mdr.nims.go.jp/datasets/60f837c7-29f3-4a56-ac05-f71275c506ce

## File

- [1-s2.0-S0079642526002124-main.pdf](https://mdr.nims.go.jp/filesets/db801df7-ee1d-4e74-902a-7ea59b5dc03c/download) ([Detail](https://mdr.nims.go.jp/filesets/db801df7-ee1d-4e74-902a-7ea59b5dc03c.md))

## Id

60f837c7-29f3-4a56-ac05-f71275c506ce

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-25T22:31:10.709843Z

## Updated at

2026-10-26T01:30:37.218616Z

## Published at

2026-10-26T03:26:33.574538Z

## Doi



## First published url

https://doi.org/10.1016/j.pmatsci.2026.101865

## Date published

2026-10-15

## Recorded date published

2027-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'From embrittlement to enhancement: pathway toward using hydrogen as a beneficial
    interstitial solute element in austenitic steels'
  title_type: original
  lang: en

## Description

- description: Hydrogen has long been regarded as a detrimental interstitial element
    in metallic alloys, primarily owing to its role in hydrogen embrittlement. However,
    recent experimental and computational studies, principally involving austenitic
    steels including Fe–Cr–Ni stainless steels, high-Mn TWIP alloys, low-density steels
    (alloyed with aluminum) have revealed that hydrogen can, under carefully controlled
    conditions of alloy composition, microstructure, stacking fault energy, and hydrogen
    concentration, act as a functional and beneficial interstitial solute element
    that can enhance strength, ductility, or even both. This review critically examines
    the fundamental mechanisms underlying this paradoxical yet promising behavior,
    with particular emphasis on hydrogen-enhanced twinning, hydrogen-enhanced densified
    twinning, hydrogen-enhanced microbanding, and hydrogen solid-solution strengthening.
    The roles of stacking fault energy, grain size, precipitation (κ-carbide, B2 intermetallic),
    and hydrogen charging protocol (electrochemical vs. gaseous charging; pre-charging
    vs. in-situ) on the operative mechanism and net mechanical response are systematically
    discussed. A key conclusion is that the transition from hydrogen embrittlement
    to hydrogen-enhanced mechanical properties is governed by a multi-dimensional
    parameter space that has not yet been fully mapped. These findings provide a scientific
    basis for a conceptual reorientation in designing alloy compositions and microstructures
    that may promote beneficial hydrogen–defect interactions under controlled or even
    in-service hydrogen exposure while suppressing embrittlement.
  description_type: abstract
  lang: und

## Creator

- name: Vahid Javaheri
  role: author
  orcid: https://orcid.org/0000-0002-3443-2755
- name: Mahsa Barati Mahyari
  role: author
- name: Mohammad Moallemi
  role: author
  orcid: https://orcid.org/0000-0001-9175-3822
- name: Pentti Karjalainen
  role: author
  orcid: https://orcid.org/0000-0002-3206-9083
- name: Lisa Claeys
  role: author
  orcid: https://orcid.org/0000-0002-3034-4889
- name: Liese Vandewalle
  role: author
  orcid: https://orcid.org/0000-0002-5513-4044
- name: Rebecca Janisch
  role: author
  orcid: https://orcid.org/0000-0003-2136-0788
- name: Hosni Idrissi
  role: author
- name: Yuhei Ogawa
  role: author
  orcid: https://orcid.org/0000-0003-2713-9822
- name: Jukka Kömi
  role: author
- name: Kim Verbeken
  role: author
  orcid: https://orcid.org/0000-0002-5190-016X

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Austenitic steel
  schema: not_defined
- subject: Hydrogen
  schema: not_defined
- subject: Mechanical properties
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Progress in Materials Science
  issn: '00796425'
  volume: 165, Part C
  article_number: '101865'

## Conference



## Related item



## Funding

- funder_name: Research Council of Finland

## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

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  filename: 1-s2.0-S0079642526002124-main.pdf
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## Thumbnail

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filename: 1-s2.0-S0079642526002124-main.pdf