# Factors determining the torsional fatigue strength in bainitic steels with banded microstructures

https://mdr.nims.go.jp/datasets/102a64ee-0569-4e76-a5de-626092d8a519

## File

- [Yoshimura-2024-Factors determining the torsio1.pdf](https://mdr.nims.go.jp/filesets/b3e0bb37-d421-4309-af99-18ae0a6f11b5/download) ([Detail](https://mdr.nims.go.jp/filesets/b3e0bb37-d421-4309-af99-18ae0a6f11b5.md))

## Id

102a64ee-0569-4e76-a5de-626092d8a519

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-23T00:06:27.117591Z

## Updated at

2024-12-24T04:58:16.807650Z

## Published at

2024-12-24T04:58:16.904770Z

## Doi



## First published url

https://doi.org/10.1016/j.ijfatigue.2024.108714

## Date published

2024-11-17

## Recorded date published

2025-3

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Factors determining the torsional fatigue strength in bainitic steels with
    banded microstructures
  title_type: original
  lang: en

## Description

- description: 'This study aimed to identify the microstructural factors governing
    the torsional fatigue strength of bainitic steels. Torsional fatigue tests were
    performed on two bainitic steels with banded microstructures comprised of soft
    and hard layers. The soft layers were coarse-grained with low Vickers hardness
    (HV), while the hard layers were fine-grained with high HV. Both materials possessed
    similar average HV values but differing band morphologies: a coarse band (CB)
    with HV = 329 and a fine band (FB) with HV = 314. Interestingly, the FB exhibited
    a 30 % higher fatigue strength than the CB. Through microscopic observations and
    finite element analysis, it was established that different fatigue strengths could
    be attributed to the particular width and array of the bands. The reticular band
    array in the FB steel raises crack initiation resistance due to the constraint
    of cyclic plastic deformation. In addition, the narrower spacing of hard layers
    can impede crack propagation when the extension mode transitions from shear mode
    to Mode I. In contrast, the columnar array and wider spacing of the bands in the
    CB steel are likely to provide weaker resistance to crack initiation and propagation,
    resulting in an inferior fatigue strength.'
  description_type: abstract
  lang: und

## Creator

- name: Soma Yoshimura
  role: author
- name: Kentaro Wada
  role: author
  orcid: https://orcid.org/0000-0002-3204-7087
- name: Sungcheol Park
  role: author
- name: Hisao Matsunaga
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Bainitic steel
  schema: not_defined
- subject: Banded microstructure
  schema: not_defined
- subject: Torsional fatigue strength
  schema: not_defined
- subject: Small crack
  schema: not_defined
- subject: Finite element analysis
  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: International Journal of Fatigue
  issn: '01421123'
  volume: '192'
  article_number: '108714'

## Conference



## Related item



## Funding



## 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



## Software



## Custom property



## Fileset

- id: b3e0bb37-d421-4309-af99-18ae0a6f11b5
  filename: Yoshimura-2024-Factors determining the torsio1.pdf
  content_type: application/pdf
  size: 24496351
  md5: 539cdb55168bb58ef7fadc081563068c

## Thumbnail

fileset_id: b3e0bb37-d421-4309-af99-18ae0a6f11b5
filename: Yoshimura-2024-Factors determining the torsio1.pdf