# Raft Structure of Nickel Base Single-Crystal Superalloys

https://mdr.nims.go.jp/datasets/0bb5c4c8-552a-40be-88b8-c56615dcce71

## File

- [Saito2024.pdf](https://mdr.nims.go.jp/filesets/18a232e5-0091-47bd-a076-f40e89062f70/download) ([Detail](https://mdr.nims.go.jp/filesets/18a232e5-0091-47bd-a076-f40e89062f70.md))

## Id

0bb5c4c8-552a-40be-88b8-c56615dcce71

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-27T06:14:09.366115Z

## Updated at

2024-12-28T07:30:55.848250Z

## Published at

2024-12-28T07:30:55.941895Z

## Doi



## First published url

https://doi.org/10.2320/matertrans.mt-m2024081

## Date published

2024-12-01

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Raft Structure of Nickel Base Single-Crystal Superalloys
  title_type: original
  lang: en

## Description

- description: Series of Ni-base single-crystal superalloys with superior thermal
    durability have been developed to improve thermal efficiency of gas turbine systems.
    Microstructural transition during creep so called “raft structure” formation enhances
    creep properties at lower stress and higher temperature condition. Furthermore,
    larger perfection degree of the raft structure contributes to better creep properties
    under the same creep condition. To control the perfection degree of the raft structure,
    magnitude of a lattice misfit and an elastic misfit between gamma and gamma prime
    phases should be controlled. In the current situation, the lattice misfit can
    be controlled by using alloy design program NIMS has developed. In this review,
    we focused on the role of the raft structure in alloy design. Observation results
    and predicted mechanisms about strengthening by the microstructural transition,
    in addition to the mechanism about microstructural transition itself during creep,
    were summarized and explained. Finally, under these recognitions mentioned above,
    our effort to establish a new alloy design approach to control the perfection
    degree of the raft structure by modifying the elastic misfit were introduced.
  description_type: abstract
  lang: und

## Creator

- name: Takuma Saito
  role: author
- name: Hiroshi Harada
  role: author
- name: Tadaharu Yokokawa
  role: author
- name: Makoto Osawa
  role: author
- name: Kyoko Kawagishi
  role: author
  orcid: https://orcid.org/0000-0001-7652-9232
- name: Shinsuke Suzuki
  role: author

## Contact agent



## Publisher

organization: The Japan Institute of Metals and Materials

## Managing organization



## Keyword

- subject: Ni-base single crystal suprealloys
  schema: not_defined
- subject: raft structure
  schema: not_defined
- subject: elastic misfit
  schema: not_defined
- subject: creep strength
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: MATERIALS TRANSACTIONS
  issn: '13459678'
  volume: '65'
  issue: '12'
  start_page: 1443
  end_page: 1457
  article_number: MT-M2024081

## Conference



## Related item



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## 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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## Custom property



## Fileset

- id: 18a232e5-0091-47bd-a076-f40e89062f70
  filename: Saito2024.pdf
  content_type: application/pdf
  size: 6891067
  md5: a9c96d084b9e031aca2be94c972b0547

## Thumbnail

fileset_id: 18a232e5-0091-47bd-a076-f40e89062f70
filename: Saito2024.pdf