# Evaluation method for the interfacial strength of thermally grown Al2O3 scale and Ni-Al alloy

https://mdr.nims.go.jp/datasets/bfc83bf9-76a7-44cb-968b-8ac874ea3345

## File

- [Final version of article.pdf](https://mdr.nims.go.jp/filesets/dbbd41f6-013d-4fc4-b2b9-724a9b3c0a90/download) ([Detail](https://mdr.nims.go.jp/filesets/dbbd41f6-013d-4fc4-b2b9-724a9b3c0a90.md))

## Id

bfc83bf9-76a7-44cb-968b-8ac874ea3345

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-16T02:56:10.457633Z

## Updated at

2026-07-16T04:19:04.439339Z

## Published at

2026-07-16T05:29:51.854970Z

## Doi



## First published url

https://doi.org/10.1016/j.matdes.2026.116448

## Date published

2026-06-19

## Recorded date published

2026-8

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Evaluation method for the interfacial strength of thermally grown Al2O3 scale
    and Ni-Al alloy
  title_type: original
  lang: en

## Description

- description: Nanoindentation techniques are useful for evaluating the critical load
    for crack initiation on interface between Ni-Al alloy and thin surface Al2O3 scale
    formed at high temperature, since interfacial cracking can be clearly detected
    as a pop-in event. However, actual interfacial stress applied during loading and
    when cracked is unclear, due to the multiaxial stress field. Here we analyzed
    interfacial stress distribution during the nanoindentation using finite element
    analysis. Elastoplastic simulations of nanoindentation were performed with local
    stress-strain curves for oxide scale and the Al depletion zone. Local stress-strain
    curves were inversely analyzed from experimental load-penetration depth curves,
    obtained using separate nanoindentation tests. Interfacial stress was obtained
    as a function of indentation load, clarifying that shear stress acting on interface
    contributed significantly to crack initiation. The two-parameter Weibull plots
    of interfacial strength σ_(Int,max)^c were converted from pop-in load Pc obtained
    in experimental nanoindentation tests for samples with different amounts of impurity
    S segregation. Largest differences appear where fracture probability F is low;
    for F=4%, difference of approximately 780 MPa between the sample with higher S
    segregation level (high Sinterface alloy, σ_(Int,max)^c=1.73 GPa) and lower S
    segregation level (low Sinterface alloy, σ_(Int,max)^c=2.51 GPa) were obtained.
  description_type: abstract
  lang: und

## Creator

- name: Chihiro Tabata
  role: author
  orcid: https://orcid.org/0000-0001-6597-4998
  organization: National Institute for Materials Science
- name: Taiyo Maeda
  role: author
- name: Thomas Hoefler
  role: author
  orcid: https://orcid.org/0000-0003-0650-179X
  organization: National Institute for Materials Science
- name: Shingo Ozaki
  role: author
- name: Kyoko Kawagishi
  role: author
  orcid: https://orcid.org/0000-0001-7652-9232
  organization: National Institute for Materials Science
- name: Shinsuke Suzuki
  role: author
- name: Takahito Ohmura
  role: author
  orcid: https://orcid.org/0000-0001-7528-566X
  organization: National Institute for Materials Science
- name: Toshio Osada
  role: author
  orcid: https://orcid.org/0000-0003-1539-9264
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Finite Element Analysis
  schema: not_defined
- subject: Nanoindentation
  schema: not_defined
- subject: Interfacial strength
  schema: not_defined
- subject: Weibull plots
  schema: not_defined
- subject: High temperature oxidation
  schema: not_defined
- subject: Sulfur segregation
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-06-17

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Materials & Design
  issn: '02641275'
  volume: '268'
  article_number: '116448'

## Conference



## Related item



## Funding

- funder_name: National Institute for Materials Science
- identifier: 23KJ2024
  funder_name: Japan Society for the Promotion of Science

## 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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## Fileset

- id: dbbd41f6-013d-4fc4-b2b9-724a9b3c0a90
  filename: Final version of article.pdf
  content_type: application/pdf
  size: 11799255
  md5: 475d5067ba15a6e936b148a277187a47

## Thumbnail

fileset_id: dbbd41f6-013d-4fc4-b2b9-724a9b3c0a90
filename: Final version of article.pdf