# Data-based selection of creep constitutive models for high-Cr heat-resistant steel

https://mdr.nims.go.jp/datasets/6dd4bd5a-33ec-4eda-bfe9-93e9f80a176d

## File

- [10.1080_14686996.2020.1738268.pdf](https://mdr.nims.go.jp/filesets/830c3dc4-eaf2-48da-bec1-6be61cc58674/download) ([Detail](https://mdr.nims.go.jp/filesets/830c3dc4-eaf2-48da-bec1-6be61cc58674.md))

## Id

6dd4bd5a-33ec-4eda-bfe9-93e9f80a176d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2021-08-05T16:24:16.146279Z

## Updated at

2024-01-05T13:12:23.366608Z

## Published at

2022-10-31T02:55:49.763184Z

## Doi



## First published url

https://doi.org/10.1080/14686996.2020.1738268

## Date published

2020-01-31

## Recorded date published

2020-1-31

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Data-based selection of creep constitutive models for high-Cr heat-resistant
    steel
  title_type: original
  lang: en

## Description

- description: There are two types of creep constitutive equation, one with a steady-state
    term (steady-state type) and the other with no steady-state term (non-steady-state
    type). We applied the Bayesian inference framework in order to examine which type
    is supported by experimental creep curves for a Grade 91 (Gr.91) steel. The Bayesian
    free energy was significantly lower for the steady-state type under all the test
    conditions in the ranges of 50–90 MPa at 923 K, 90–160 MPa at 873 K and 170–240
    MPa at 823 K, leading to the conclusion that the posterior probability was virtually
    1.0. These findings mean that the experimental data supported the steady-state-type
    equation. The dependence of the evaluated steady-state creep rate on the applied
    stress indicates that there is a transition in the mechanism governing creep deformation
    around 120 MPa.
  description_type: abstract
  lang: en

## Creator

- name: Izuno, Hitoshi
  role: author
  orcid: https://orcid.org/0000-0003-0503-3621
  organization: National Institute for Materials Science
  department: Research and Services Division of Materials Data and Integrated System
  ror: https://ror.org/026v1ze26
- name: Demura, Masahiko
  role: author
  orcid: https://orcid.org/0000-0002-7308-3041
  organization: National Institute for Materials Science
  department: Research and Services Division of Materials Data and Integrated System
  ror: https://ror.org/026v1ze26
- name: Tabuchi, Masaaki
  role: author
  orcid: https://orcid.org/0000-0002-8781-559X
  organization: National Institute for Materials Science
  department: Research Center for Structural Materials
  ror: https://ror.org/026v1ze26
- name: Mototake, Yoh-ichi
  role: author
  organization: The Institute of Statistical Mathematics
- name: Okada, Masato
  role: author
  organization: National Institute for Materials Science
  department: Research and Services Division of Materials Data and Integrated System
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Taylor & Francis

## Managing organization



## Keyword

- subject: theta method
  schema: not_defined
- subject: Creep constitutive equation
  schema: not_defined
- subject: model selection method
  schema: not_defined
- subject: bayesian free energy
  schema: not_defined
- subject: steady-state creep
  schema: not_defined
- subject: grade 91 steel
  schema: not_defined

## Rights

- description: Creative Commons BY Attribution 4.0 International
  identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Science and Technology of Advanced Materials
  issn: '14686996'
  volume: '21'
  issue: '1'
  start_page: 219
  end_page: 228

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## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



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## Fileset

- id: 830c3dc4-eaf2-48da-bec1-6be61cc58674
  filename: 10.1080_14686996.2020.1738268.pdf
  content_type: application/pdf
  size: 1948294
  md5: d24976d7766673fa4cc36a05b61bccac

## Thumbnail

fileset_id: 830c3dc4-eaf2-48da-bec1-6be61cc58674
filename: 10.1080_14686996.2020.1738268.pdf