# Origin of phase stability in Fe with long-period stacking order as an intermediate phase in cyclic γ−ε martensitic transformation

https://mdr.nims.go.jp/datasets/66e4ce03-a040-40f9-8136-1015450d7669

## File

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## Id

66e4ce03-a040-40f9-8136-1015450d7669

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2023-02-22T06:21:54.660210Z

## Updated at

2024-01-05T13:12:20.969577Z

## Published at

2023-02-28T02:42:11.365153Z

## Doi



## First published url

https://doi.org/10.1103/PhysRevResearch.3.033215

## Date published

2021-09-07

## Recorded date published

2021-9

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Origin of phase stability in Fe with long-period stacking order as an intermediate
    phase in cyclic γ−ε martensitic transformation
  title_type: original
  lang: en

## Description

- description: "A class of Fe-Mn-Si based alloys was found to exhibit a reversible
    martensitic transformation between the gamma (fcc) and epsilon (hcp) phases. During
    the deformation-induced gamma-epsilon transformation, a new phase was identified
    that is different from the epsilon-phase, where the electron diffraction spots
    are located at the 1/3 position corresponding to the hcp (2H) phase, which suggests
    long-period stacking order (LPSO). To understand the actual stacking pattern and
    discuss the possible realization of a LPSO phase as the intermediate phase between
    the gamma and epsilon phases, the phase stability of various structural polytypes
    of iron was examined using first-principles calculations with a spin-polarized\r\nform
    of the generalized gradient approximation in density functional theory. We found
    that an antiferromagnetic ordered 6H2 structure is the most stable among candidate
    LPSO structures and is energetically close to the epsilon phase, which suggests
    that the observed LPSO-like phase adopts the 6H2 structure. We determined that
    the origin of the phase stability can be attributed to the depth of the deep valley
    in the density of states close to the Fermi level."
  description_type: abstract
  lang: eng

## Creator

- name: Takao Tsumuraya
  role: author
  orcid: https://orcid.org/0000-0001-9063-9278
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Ikumu Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-7693-1675
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Takahiro Sawaguchi
  role: author
  orcid: https://orcid.org/0000-0002-9405-002X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: American Physical Society (APS)

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## Rights

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

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## Embargo



## Journal

- title: Physical Review Research
  issn: '26431564'
  volume: '3'
  issue: '3'
  start_page: 33215
  end_page: 33215

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## Measurement method



## Specimen



## Chemical composition



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## Fileset

- id: 19caf5cd-a74b-439f-8ef1-4dcbbc83a010
  filename: tsumuraya_PhysRevResearch2021.pdf
  content_type: application/pdf
  size: 2025735
  md5: 2ee0a39160f92343146e9ca8d1073219

## Thumbnail

fileset_id: 19caf5cd-a74b-439f-8ef1-4dcbbc83a010
filename: tsumuraya_PhysRevResearch2021.pdf