# Short fatigue crack growth mechanism in Ni-Co based superalloy at elevated temperatures and in oxidative atmospheres

https://mdr.nims.go.jp/datasets/29fb1ada-3491-4622-9521-e2ef7021349f

## File

- [Accepted manuscript.pdf](https://mdr.nims.go.jp/filesets/206e543b-c0a6-4528-8341-823c56b12260/download) ([Detail](https://mdr.nims.go.jp/filesets/206e543b-c0a6-4528-8341-823c56b12260.md))

## Id

29fb1ada-3491-4622-9521-e2ef7021349f

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-11-26T23:37:12.416521Z

## Updated at

2025-10-02T23:30:16.714890Z

## Published at

2025-10-02T23:17:55.528917Z

## Doi

https://doi.org/10.48505/nims.4287

## First published url

https://doi.org/10.1016/j.msea.2023.145655

## Date published

2023-09-02

## Recorded date published

2023-10

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Short fatigue crack growth mechanism in Ni-Co based superalloy at elevated
    temperatures and in oxidative atmospheres
  title_type: original
  lang: en

## Description

- description: In this study, to elucidate the oxidation effect on the short fatigue
    crack growth (SFCG) characteristics of Ni-Co based TMW-4M3 superalloy, fatigue
    tests were conducted at room/elevated temperature in air/vacuum and three-dimensional
    microscopic observation of the SFCs using a plasma focused ion beam – scanning
    electron microscope (PFIB – SEM) system. Fatigue lives tested under vacuum at
    elevated temperature were comparable to those at room temperature while those
    tested at elevated temperatures in air showed shorter fatigue life in higher stress
    regions and longer fatigue life in lower stress regions than the others. In situ
    observation of SFCs at elevated temperatures in air revealed SFCG deceleration
    in the small ΔK regions and acceleration in large ΔK regions. SFCs opening/closing
    behaviours at elevated temperatures measured by digital image correlation (DIC)
    showed the crack opening stress to be higher at elevated temperature in air, possibly
    due to oxide-induced crack closure. However, the crack closure effect did not
    fully explain the difference in FCG rate between room and elevated temperatures
    in air. Three-dimensional investigations revealed SFCs to form at elevated temperatures
    in air, showing straight transgranular FCG to be insensitive to microstructure
    in slow growth regions, and intergranular FCG to precede that in the surrounding
    material in fast growth regions, in contrast to microstructural SFCs features
    at room temperature. It appears that slow and straight unique SFCG at elevated
    temperatures might occur due to intermittent brittle fracture of oxides formed
    at the crack tip. This suggests a possible role of the oxide layer at the crack
    tip in broadening the plastic deformation distribution, thus contributing to FCGR
    deceleration.
  description_type: abstract
  lang: eng

## Creator

- name: Hideaki Nishikawa
  role: author
  orcid: https://orcid.org/0000-0002-2484-6903
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kishan Habib
  role: author
  organization: National Institute for Materials Science
- name: Yoshiyuki Furuya
  role: author
  orcid: https://orcid.org/0000-0002-3039-5280
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Toru Hara
  role: author
  orcid: https://orcid.org/0000-0002-9715-6444
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Toshio Osada
  role: author
  orcid: https://orcid.org/0000-0003-1539-9264
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Kyoko Kawagishi
  role: author
  orcid: https://orcid.org/0000-0001-7652-9232
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Ni-Co based superalloy
  schema: not_defined
- subject: Elevated temperature
  schema: not_defined
- subject: Oxidation
  schema: not_defined
- subject: Short fatigue crack
  schema: not_defined
- subject: Crack closure
  schema: not_defined
- subject: Three-dimensional observation
  schema: not_defined

## Rights

- description: "© 2023. This manuscript version is made available under the CC-BY-NC-ND
    4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/  "
  identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-10-03
end_date: 2025-10-03

## Journal

- title: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE
    AND PROCESSING
  issn: '09215093'
  volume: '885'
  start_page: 145655
  end_page: 145655

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## Funding

- description: 'This research was supported by the Council for Science, Technology
    and Innovation (CSTI), the Cross-ministerial Strategic Innovation Promotion Program
    (SIP), “Materials Integration” for Revolutionary Design Systems for Structural
    Materials (Funding agency:  JST).'

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## Fileset

- id: 206e543b-c0a6-4528-8341-823c56b12260
  filename: Accepted manuscript.pdf
  content_type: application/pdf
  size: 14955260
  md5: bf6c2b0591f3edca722f5e0a36fe976b

## Thumbnail

fileset_id: 206e543b-c0a6-4528-8341-823c56b12260
filename: Accepted manuscript.pdf