# Improvement of fatigue limit by pre-fatigue deformation in 1.6 GPa-grade as-quenched martensitic steel

https://mdr.nims.go.jp/datasets/95626088-9d19-46cf-b646-ad7911afedaf

## File

- [2024_201.pdf](https://mdr.nims.go.jp/filesets/7bf51090-3f89-47c4-b36e-78f5ea14a16a/download) ([Detail](https://mdr.nims.go.jp/filesets/7bf51090-3f89-47c4-b36e-78f5ea14a16a.md))

## Id

95626088-9d19-46cf-b646-ad7911afedaf

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-07-10T07:51:21.180527Z

## Updated at

2025-07-11T23:30:37.837110Z

## Published at

2025-07-11T23:17:27.205030Z

## Doi



## First published url

https://doi.org/10.2355/isijisss.2024.0_201

## Date published

2024-11-10

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Improvement of fatigue limit by pre-fatigue deformation in 1.6 GPa-grade
    as-quenched martensitic steel
  title_type: original
  lang: en

## Description

- description: 'The fatigue limit of steel generally increases with tensile strength;
    however, when tensile strength exceeds ~1.4 GPa, further increases in tensile
    strength fail to elevate the fatigue limit or may even decrease it (fatigue limit
    ceiling). This ceiling poses a challenge for the widespread application of ultrahigh-strength
    steels. In this study, we successfully achieved a significant improvement in the
    fatigue limit through pre-fatigue deformation, thereby breaking through the fatigue
    limit ceiling in 1.6 GPa-grade as-quenched martensitic steel (Fe-3Mn-0.2C (wt.%)).
    The maximum stress corresponding to the fatigue limit increased from 675 MPa to
    1300 MPa (stress ratio: 0.1, 107 cycles). In contrast, a specimen subjected to
    pre-constant-loading at the same maximum stress as the pre-fatigue training showed
    only minimal improvement in the fatigue limit. These findings reveal that fatigue
    deformation, traditionally viewed as detrimental, can be beneficial for fatigue
    fracture resistance when properly applied. Moreover, the absence of surface cracks
    in all non-fractured specimens indicates that the fatigue limit of as-quenched
    martensitic steels aligns with the crack initiation limit, rather than the crack
    non-propagation limit. Therefore, the significant improvement in the fatigue limit
    is attributed to the improvement in the crack initiation limit achieved through
    the pre-fatigue deformation.'
  description_type: abstract
  lang: und

## Creator

- name: Kazuho Okada
  role: author
  orcid: https://orcid.org/0000-0003-0183-4528
- name: Eri Nakagawa
  role: author
  orcid: https://orcid.org/0000-0002-8784-0138
- name: Kaneaki Tsuzaki
  role: author
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411

## Contact agent



## Publisher

organization: Iron and Steel Institute of Japan

## Managing organization



## Keyword

- subject: マルテンサイト鋼
  schema: not_defined
- subject: 疲労破壊
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Proceedings of International Symposia on Steel Science
  issn: '27596621'
  volume: '2024'
  start_page: 201
  end_page: 204

## 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



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## Fileset

- id: 7bf51090-3f89-47c4-b36e-78f5ea14a16a
  filename: 2024_201.pdf
  content_type: application/pdf
  size: 1528384
  md5: 7b4711deca3899e19969f9bfa902abbc

## Thumbnail

fileset_id: 7bf51090-3f89-47c4-b36e-78f5ea14a16a
filename: 2024_201.pdf