# Effect of carbon segregation at prior austenite grain boundary on hydrogen-related crack propagation behavior in 3Mn-0.2C martensitic steels

https://mdr.nims.go.jp/datasets/6dbcb6df-1422-4fbf-bd6f-050e0c5c79fe

## File

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## Id

6dbcb6df-1422-4fbf-bd6f-050e0c5c79fe

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-05T00:36:39.652814Z

## Updated at

2024-09-05T07:30:34.238658Z

## Published at

2024-09-05T07:30:34.315845Z

## Doi



## First published url

https://doi.org/10.1016/j.actamat.2024.120288

## Date published

2024-08-14

## Recorded date published

2024-11

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effect of carbon segregation at prior austenite grain boundary on hydrogen-related
    crack propagation behavior in 3Mn-0.2C martensitic steels
  title_type: original
  lang: en

## Description

- description: The present study aimed at strengthening prior austenite grain boundary
    (PAGB) cohesive energy using carbon segregation and investigated the effect of
    carbon segregation at PAGB on the microscopic crack propagation behavior of hydrogen-related
    intergranular fractures in high-strength martensitic steels. At the low hydrogen
    content (below 0.2 wt. ppm), the fracture initiation toughness (JIC) and tearing
    modulus (TR), corresponding to crack growth resistance, were significantly improved
    by carbon segregation. In contrast, JIC and TR did not change by carbon segregation
    at the high hydrogen content (above 0.5 wt. ppm). Considering the non-linear relationship
    between the toughness properties and the PAGB cohesive energy, the experimentally
    evaluated toughness properties (JIC and TR) and the GB cohesive energy previously
    calculated by first-principles calculations were semi-quantitatively consistent
    even at the high hydrogen content. The microstructure observation confirmed that
    the plastic deformation associated with crack propagation, such as the local ductile
    fracture of uncracked ligaments and the formation of dislocation cell structures
    / nano-voids, played an important role in the non-linear relationship between
    the toughness properties and PAGB cohesive energy.
  description_type: abstract
  lang: und

## Creator

- name: Kazuho Okada
  role: author
  orcid: https://orcid.org/0000-0003-0183-4528
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411
- name: Yuuji Kimura
  role: author
  orcid: https://orcid.org/0000-0002-8907-0704
- name: Masatake Yamaguchi
  role: author
  orcid: https://orcid.org/0000-0001-8839-2261
- name: Ken-ichi Ebihara
  role: author
  orcid: https://orcid.org/0000-0003-3061-5711
- name: Nobuhiro Tsuji
  role: author
  orcid: https://orcid.org/0000-0002-2132-1327

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hydrogen embrittlement
  schema: not_defined
- subject: Martensitic steel
  schema: not_defined
- subject: Crack propagation
  schema: not_defined
- subject: Grain-boundary segregation
  schema: not_defined
- subject: Intergranular failure
  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: '280'
  article_number: '120288'

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## Fileset

- id: 0c797237-88b4-486c-9fd5-0fab0bc69cf6
  filename: 1-s2.0-S1359645424006384-main.pdf
  content_type: application/pdf
  size: 24579557
  md5: c316cf822904d6c1cd835333a80c732f

## Thumbnail

fileset_id: 0c797237-88b4-486c-9fd5-0fab0bc69cf6
filename: 1-s2.0-S1359645424006384-main.pdf