# CALPHAD approach for prediction of local phase transformation at superlattice stacking fault in gamma prime precipitates in superalloys with multi-component system

https://mdr.nims.go.jp/datasets/e9f33e50-47ef-460c-b101-9d1473900292

## File

- [2025NextMater_Saito(SF).pdf](https://mdr.nims.go.jp/filesets/010448d2-fd45-47b6-a515-357ce1fafe26/download) ([Detail](https://mdr.nims.go.jp/filesets/010448d2-fd45-47b6-a515-357ce1fafe26.md))

## Id

e9f33e50-47ef-460c-b101-9d1473900292

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-07T06:56:55.222291Z

## Updated at

2024-09-09T07:30:26.811958Z

## Published at

2024-09-09T07:30:26.911465Z

## Doi



## First published url

https://doi.org/10.1016/j.nxmate.2024.100363

## Date published

2024-09-06

## Recorded date published

2025-4

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: CALPHAD approach for prediction of local phase transformation at superlattice
    stacking fault in gamma prime precipitates in superalloys with multi-component
    system
  title_type: original
  lang: en

## Description

- description: This manuscript investigated the possibility for CALPHAD (calculation
    of phase diagram) approach to predict the local phase transformation accompanied
    by compositional transition on the superlattice stacking fault in the γ′ precipitates
    in multi-component superalloys. The method is basically parallel tangent construction
    using the concept of the defect phases in the system of γ and γ′ phases to approximate
    the stacking fault. Because the important issue for the strengthening by the local
    phase transformation is whether the local transformed phase is ordered or disordered,
    the ordering was judged by the size of the stacking fault energy to form the defect
    phase from γ′ precipitates. In addition, since the solute partitioning ratio between
    defect phase and γ′ precipitates is also significant to consider the local phase
    transformation, predicted ratio is verified using the experimental results in
    the previous reports.  In the case of SISF (superlattice intrinsic stacking fault),
    Co-base superalloys tend to form ordered defect phase, but Co-Ni-base superalloys
    tend to form disordered defect phase. Formability of ordered and disordered defect
    phase in Ni-base superalloys is calculated to be competitive each other. Predicted
    solute partitioning rate almost agrees with experimental one expect for W and
    Nb in multi-component superalloys. This discrepancy could originate from the accuracy
    of the physical properties of Ti and Nb in the calculation. In the case of SESF
    (superlattice extrinsic stacking fault), all considered alloys of Ni-base superalloys
    is predicted to have ordered defect phase, judged by stacking fault energy, however,
    predicted solute partitioning ratio is totally different from the experimental
    ones. This issue could originate form inaccurate physical properties of Ti and
    Ta in the multi-component system.
  description_type: abstract
  lang: und

## Creator

- name: Takuma Saito
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hiroshi Harada
  role: author
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Taichi Abe
  role: author
  orcid: https://orcid.org/0000-0002-5065-0939
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Hideyuki Murakami
  role: author
  orcid: https://orcid.org/0000-0001-8220-5816
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Superalloys
  schema: not_defined
- subject: Stacking fault
  schema: not_defined
- subject: Solute partition
  schema: not_defined
- subject: Local phase transformation
  schema: not_defined
- subject: Suzuki effect
  schema: not_defined

## Rights

- description: "You are free to:\r\nShare — copy and redistribute the material in
    any medium or format for any purpose, even commercially.\r\nAdapt — remix, transform,
    and build upon the material for any purpose, even commercially.\r\nThe licensor
    cannot revoke these freedoms as long as you follow the license terms."
  identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Next Materials
  issn: '29498228'
  volume: '7'
  article_number: '100363'

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## Fileset

- id: '010448d2-fd45-47b6-a515-357ce1fafe26'
  filename: 2025NextMater_Saito(SF).pdf
  content_type: application/pdf
  size: 6649607
  md5: 0f13e8a323b35730e86a9080abd84a34

## Thumbnail

fileset_id: '010448d2-fd45-47b6-a515-357ce1fafe26'
filename: 2025NextMater_Saito(SF).pdf