# Hydrogen-enhanced microbanding in an austenitic FeMnAlC low-density steel: Effect on hydrogen embrittlement resistance

https://mdr.nims.go.jp/datasets/e7a2fac4-9f22-46c9-885a-b795e69cd3b8

## File

- [2024-Acta Mater 280 (2024) 120335.pdf](https://mdr.nims.go.jp/filesets/2f6bc006-5c44-47b8-b654-7dcb79831b85/download) ([Detail](https://mdr.nims.go.jp/filesets/2f6bc006-5c44-47b8-b654-7dcb79831b85.md))

## Id

e7a2fac4-9f22-46c9-885a-b795e69cd3b8

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-11T06:49:16.858278Z

## Updated at

2024-11-21T07:30:22.234764Z

## Published at

2024-11-21T07:30:22.339197Z

## Doi



## First published url

https://doi.org/10.1016/j.actamat.2024.120335

## Date published

2024-08-26

## Recorded date published

2024-11

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Hydrogen-enhanced microbanding in an austenitic FeMnAlC low-density steel:
    Effect on hydrogen embrittlement resistance'
  title_type: original
  lang: en

## Description

- description: "We have investigated the influence of 101 mass ppm hydrogen content
    on the room\r\ntemperature deformation structure and mechanical behavior of an
    austenitic\r\nFe30Mn6.5Al0.3C (wt.%) low-density steel by several electron microscopy
    techniques,\r\nsuch as electron channeling contrast imaging (ECCI), electron backscatter
    diffraction\r\n(EBSD), and scanning electron transmission (STEM). The steel exhibits
    a high\r\nhydrogen embrittlement resistance associated with a moderated increase
    in strength\r\n(yield stress increase of 10%) and ductility (increase in the elongation
    to fracture of\r\n8%).Analysis of the deformation structure reveals that hydrogen
    influences the\r\ndeformation behavior by promoting deformation mechanisms associated
    with\r\ninhomogeneous plasticity (hydrogen-enhanced deformation banding (HEDB))
    and\r\nstrain localization (hydrogen-enhanced microbanding (HEMB)). These deformation\r\nmechanisms
    are ascribed to hydrogen-induced effects on dislocation plasticity,\r\nresulting
    in macroscopic kink bands, sub-micron localized strain gradients, and\r\nlocalized
    shear at cell blocks. We find that HEMB plays a relevant role in the\r\ndeformation
    behavior of sub-micron localized strain gradients by promoting plastic\r\nrelaxation
    and the enhanced storage of geometrically necessary dislocations within\r\nthem.
    These effects mitigate the activation of damage mechanisms and enhance the\r\nstrain-hardening
    capacity, contributing to the high HE resistance of the steel,\r\ncomparable to
    that of high HE-resistant fcc alloys and steels."
  description_type: abstract
  lang: und

## Creator

- name: Ivan Gutierrez-Urrutia
  role: author
  orcid: https://orcid.org/0000-0003-1438-3703
  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: Hydrogen embrittlement
  schema: not_defined
- subject: FeMnAlC low-density steels
  schema: not_defined
- subject: electron channeling contrast imaging
  schema: not_defined
- subject: strain localization
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Acta Materialia
  issn: '13596454'
  volume: '280'
  article_number: '120335'

## Conference



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## Instrument



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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



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## Fileset

- id: 2f6bc006-5c44-47b8-b654-7dcb79831b85
  filename: 2024-Acta Mater 280 (2024) 120335.pdf
  content_type: application/pdf
  size: 39324456
  md5: ac27e3471bbaaa0bb92fd2a2d3ed9378

## Thumbnail

fileset_id: 2f6bc006-5c44-47b8-b654-7dcb79831b85
filename: 2024-Acta Mater 280 (2024) 120335.pdf