# In-situ TEM observation of <c>-axis extension twin nucleation in single crystalline Mg

https://mdr.nims.go.jp/datasets/a7741c2a-d1cb-4ab4-8afb-9c95d30dd40c

## File

- [article_MSEA.docx](https://mdr.nims.go.jp/filesets/1537277c-524c-49f8-9c1e-443ecc718e7d/download) ([Detail](https://mdr.nims.go.jp/filesets/1537277c-524c-49f8-9c1e-443ecc718e7d.md))

## Id

a7741c2a-d1cb-4ab4-8afb-9c95d30dd40c

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-10-23T23:55:32.460517Z

## Updated at

2025-11-09T23:30:06.365782Z

## Published at

2025-11-09T23:23:20.807461Z

## Doi

https://doi.org/10.48505/nims.4885

## First published url

https://doi.org/10.1016/j.msea.2023.145895

## Date published

2023-11-10

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: In-situ TEM observation of <c>-axis extension twin nucleation in single
    crystalline Mg
  title_type: original
  lang: en

## Description

- description: The nucleation of extension deformation twins in magnesium is investigated
    through in-situ transmission electron microscopy (TEM) indentation tests accompanying
    with load and unload modes.  Note that indentation direction is parallel to the
    [0001] direction (<c>-axis).  Based on the results obtained from numerical study,
    the dog-bone shaped specimen is used i) to avoid friction between the indentation
    tip and top of the specimen and ii) to control the stress concentration site.  Many
    dislocations on the basal and prismatic planes are activated at the loading state,
    and twins are never formed even at achieving maximum stress of ~1.4 GPa.  On the
    other hand, the {101 ̅2}-typed deformation twins are nucleated at the unloading
    state.  In-situ observations reveal that the source of twin nucleation is due
    to the interaction between activated dislocations through slips and residual dislocation,
    which causes a high stress concentration.  Subsequently, these twins grow as the
    unload indentation progresses.
  description_type: abstract
  lang: und

## Creator

- name: Hidetoshi Somekawa
  role: author
  orcid: https://orcid.org/0000-0001-5007-5834
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Eri Nakagawa
  role: author
  orcid: https://orcid.org/0000-0002-8784-0138
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Yuka Hara
  role: author
- name: Taku Moronaga
  role: author
  orcid: https://orcid.org/0000-0002-6915-0627
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Yukiko Ogawa
  role: author
  orcid: https://orcid.org/0000-0002-7830-1597
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Alok Singh
  role: author
  orcid: https://orcid.org/0000-0001-5515-8305
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Takahito Ohmura
  role: author
  orcid: https://orcid.org/0000-0001-7528-566X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Magnesium
  schema: not_defined
- subject: Deformation twins
  schema: not_defined
- subject: In-situ observation
  schema: not_defined
- subject: Dislocation
  schema: not_defined
- subject: Mechanical response
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2023-11-10
end_date: 2025-11-10

## Journal

- title: 'Materials Science and Engineering: A'
  issn: '09215093'
  volume: '890'
  article_number: '145895'

## Conference



## Related item



## Funding

- identifier: 19K05068
  funder_name: Japan Society for the Promotion of Science
- identifier: '25420765'
  funder_name: Japan Society for the Promotion of Science
- identifier: 22K04747
  funder_name: Japan Society for the Promotion of Science

## 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



## Software



## Custom property



## Fileset

- id: 1537277c-524c-49f8-9c1e-443ecc718e7d
  filename: article_MSEA.docx
  content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
  size: 20013529
  md5: 3a861659fcc8f90a4ff229f060d625aa

## Thumbnail

fileset_id: 1537277c-524c-49f8-9c1e-443ecc718e7d
filename: article_MSEA.docx