# Growth path and morphology of hydrogen-related cracks in grain-refined tempered martensitic steel produced by cyclic thermal treatment

https://mdr.nims.go.jp/datasets/1c15825d-5ced-4920-a8ce-0c57ebf68698

## File

- [1-s2.0-S036031992402024X-main.pdf](https://mdr.nims.go.jp/filesets/5960cee0-21ae-4b93-8a7d-ec6dee07796e/download) ([Detail](https://mdr.nims.go.jp/filesets/5960cee0-21ae-4b93-8a7d-ec6dee07796e.md))

## Id

1c15825d-5ced-4920-a8ce-0c57ebf68698

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-05-29T05:16:39.984080Z

## Updated at

2025-05-29T07:30:11.939292Z

## Published at

2025-05-29T07:19:48.766243Z

## Doi



## First published url

https://doi.org/10.1016/j.ijhydene.2024.05.327

## Date published

2024-05-24

## Recorded date published

2025-6

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Growth path and morphology of hydrogen-related cracks in grain-refined tempered
    martensitic steel produced by cyclic thermal treatment
  title_type: original
  lang: en

## Description

- description: This study investigated the effect of cyclic heat treatment on the
    resistance of tempered martensitic steels to hydrogen embrittlement. The cyclic
    heat treatment not only refined the prior austenite grain sizes from approximately
    30 to 5 μm but also reduced the initial dislocation density. The change in microstructure
    by the cyclic heat treatment did not result in obvious differences in the mechanical
    properties compared with those of simple quenched and tempered steel when hydrogen
    was not introduced into the specimens. Hydrogen charging caused intergranular
    and quasi-cleavage cracking, and both cracking modes were restricted by cyclic
    heat treatment. An important feature observed in the steel subjected to cyclic
    heat treatment was frequent crack deflection and crack tip blunting, which occurred
    at block and prior austenite grain boundaries (triple junctions). Therefore, grain
    refinement increased the probability of crack deflection and crack tip blunting.
    In addition, the relatively low dislocation density in cyclically heat-treated
    steel is believed to contribute to the suppression of plasticity-related damage
    nucleation, which is critically important for quasi-cleavage cracking.
  description_type: abstract
  lang: und

## Creator

- name: Tingshu Chen
  role: author
- name: Yuhei Ogawa
  role: author
  orcid: https://orcid.org/0000-0003-2713-9822
- name: Motomichi Koyama
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hydrogen embrittlement
  schema: not_defined
- subject: Martensitic steel
  schema: not_defined
- subject: Grain size
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: International Journal of Hydrogen Energy
  issn: '03603199'
  volume: '136'
  start_page: 731
  end_page: 741

## Conference



## Related item



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## 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: 5960cee0-21ae-4b93-8a7d-ec6dee07796e
  filename: 1-s2.0-S036031992402024X-main.pdf
  content_type: application/pdf
  size: 17089403
  md5: 43487c514cee641201211c2bc48370d9

## Thumbnail

fileset_id: 5960cee0-21ae-4b93-8a7d-ec6dee07796e
filename: 1-s2.0-S036031992402024X-main.pdf