# Material Degradation of Heat-Resistant Steels during Long-Term Creep Exposure

https://mdr.nims.go.jp/datasets/cf9d15e6-6884-4fcd-bcd0-7508d1fbe944

## File

- [67_MT-M2026047.pdf](https://mdr.nims.go.jp/filesets/b5e47065-e0f2-44e4-8d86-f972e7daf15a/download) ([Detail](https://mdr.nims.go.jp/filesets/b5e47065-e0f2-44e4-8d86-f972e7daf15a.md))

## Id

cf9d15e6-6884-4fcd-bcd0-7508d1fbe944

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-08-25T04:02:11.140819Z

## Updated at

2026-08-25T04:46:20.034211Z

## Published at

2026-08-25T07:27:38.379795Z

## Doi



## First published url

https://doi.org/10.2320/matertrans.mt-m2026047

## Date published

2026-09-01

## Recorded date published

2026

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Material Degradation of Heat-Resistant Steels during Long-Term Creep Exposure
  title_type: original
  lang: en

## Description

- description: Creep strength and material degradation of heat-resistant steel were
    discussed, focusing on microstructural changes during long-term creep exposure.
    For determining the allowable stress, the 100,000h creep rupture strength should
    be evaluated based on creep rupture data. The selection of TTP and dividing the
    creep rupture data set are important to evaluate long-term creep strength when
    creep strength degradation occurs in the long term. In order to establish the
    allowable stress, minimum creep strength must also be evaluated. The minimum creep
    strength depends on the standard error of estimate (SEE) for creep rupture data.
    If the heat-to-heat variation of creep strength is large even for the same material
    specification, the value of SEE is estimated to be large. Therefore, it is important
    to clarify the reason for the heat-to-heat variation of creep strength in terms
    of microstructural changes and chemical compositions.
  description_type: abstract
  lang: und

## Creator

- name: Kota Sawada
  role: author

## Contact agent



## Publisher

organization: The Japan Institute of Metals and Materials

## Managing organization



## Keyword

- subject: heat-resistant steels
  schema: not_defined
- subject: long-term creep
  schema: not_defined
- subject: microstructural changes
  schema: not_defined
- subject: heat-to-heat variation
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by-nc-nd/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: MATERIALS TRANSACTIONS
  issn: '13459678'
  volume: '67'
  issue: '9'
  article_number: MT-M2026047

## Conference



## Related item



## Funding



## 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: b5e47065-e0f2-44e4-8d86-f972e7daf15a
  filename: 67_MT-M2026047.pdf
  content_type: application/pdf
  size: 4076174
  md5: e26de30f381ba1cf144bb6eca982992c

## Thumbnail

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filename: 67_MT-M2026047.pdf