# Distinctive fatigue properties of additively-formed CoCrFeNiTiMo multi-principal element alloy: Excellent fatigue crack growth resistance against ordinally high cycle fatigue strength

https://mdr.nims.go.jp/datasets/a530b001-31f8-48e3-a68e-676dab417cd8

## Files

- [Accepted manuscript.pdf](https://mdr.nims.go.jp/filesets/0263f158-aa39-4e7b-bbae-2e3766988bcc/download) ([Detail](https://mdr.nims.go.jp/filesets/0263f158-aa39-4e7b-bbae-2e3766988bcc.md))

## Id

a530b001-31f8-48e3-a68e-676dab417cd8

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-12-01T04:31:45.612797Z

## Updated at

2025-11-24T23:30:10.349078Z

## Published at

2025-11-24T23:21:41.398862Z

## Doi

https://doi.org/10.48505/nims.4289

## First published url

https://doi.org/10.1016/j.msea.2023.145938

## Date published

2023-11-25

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: 'Distinctive fatigue properties of additively-formed CoCrFeNiTiMo multi-principal
    element alloy: Excellent fatigue crack growth resistance against ordinally high
    cycle fatigue strength'
  title_type: original
  lang: en

## Description

- description: "In this study, the fatigue characteristics of additively-formed multi-principal
    element alloy (MPEA) of Co1.5CrFeNi1.5Ti0.5Mo0.1 (CoCrFeNiTiMo alloy) were systematically
    compared with conventional hot-rolled and additively-formed Alloy 718 nickel-based
    super alloy, which have comparable mechanical properties. Evaluated fatigue properties
    were the low- to high-cycle fatigue strengths of plane and notched specimens,
    and long / short fatigue crack growth (FCG) resistance. The results showed the
    fatigue strength of CoCrFeNiTiMo alloy to be comparable to that of Alloy 718 for
    smooth specimens, while the fatigue strength of notched specimens was 50% higher.
    Superior notch fatigue strength can be quantitatively explained in terms of outstanding
    long fatigue crack growth resistance. Regardless of load ratio, CoCrFeNiTiMo exhibits\r\nsuperior
    FCG resistance that greatly surpasses that of conventional Fe and Ni alloys. In
    contrast, the short FCG resistance of CoCrFeNiTiMo was comparable to that of Alloy
    718, which corresponds to the fatigue strength level of a smooth specimen. Investigation
    of fatigue fracture surface and microscopic slip deformation morphology around
    the fatigue crack indicates that CoCrFeNiTiMo alloy exhibits more planar slip\r\ndeformation
    than Alloy 718. Slip constraint stimulated by slip planarity appears to have an
    important role in short and long FCG resistance when cracks cross grain boundaries."
  description_type: abstract
  lang: eng

## Creator

- name: Hideaki Nishikawa
  role: author
  orcid: https://orcid.org/0000-0002-2484-6903
  organization: National Institute of Materials Science (NIMS)
- name: Yoshiyuki Furuya
  role: author
  organization: National Institute of Materials Science (NIMS)
- name: Houichi Kitano
  role: author
  organization: National Institute of Materials Science (NIMS)
- name: Yoshiharu Kanegae
  role: author
  organization: Proterial, Ltd.
- name: Kinya Aota
  role: author
  organization: Proterial, Ltd.
- name: Kosuke Kuwabara
  role: author
  organization: Proterial, Ltd.

## Contact agent

- name: Hideaki Nishikawa
  email: NISHIKAWA.Hideaki@nims.go.jp
  orcid: https://orcid.org/
  organization: National Institute of Materials Science (NIMS)
  ror: https://ror.org/

## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Fatigue
  schema: not_defined
- subject: Additive manufacturing
  schema: not_defined
- subject: High entropy alloy
  schema: not_defined
- subject: Multi principal element alloy
  schema: not_defined
- subject: Short fatigue crack
  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: 2023-11-25
end_date: 2025-11-25

## Journal

- title: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE
    AND PROCESSING
  issn: '18734936'
  volume: '891'
  start_page: 0
  end_page: 0

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## Specimen



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## Fileset

- id: 0263f158-aa39-4e7b-bbae-2e3766988bcc
  filename: Accepted manuscript.pdf
  content_type: application/pdf
  size: 10610159
  md5: cc6cb0e08047e9124f7ac6a13546c380

## Thumbnail

fileset_id: 0263f158-aa39-4e7b-bbae-2e3766988bcc
filename: Accepted manuscript.pdf