# Dynamics of Portevin-Le Chatelier banding revealed through grain refinement in high-Mn austenitic steel: Sequential overcoming of necking

https://mdr.nims.go.jp/datasets/d79b831c-9c0a-43c8-8f2e-d06ed788c975

## File

- [2026_JMST_(Serration_Hwang).pdf](https://mdr.nims.go.jp/filesets/6f7fc011-05f5-4595-8c1e-21a9cee1741c/download) ([Detail](https://mdr.nims.go.jp/filesets/6f7fc011-05f5-4595-8c1e-21a9cee1741c.md))

## Id

d79b831c-9c0a-43c8-8f2e-d06ed788c975

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-15T23:37:57.403700Z

## Updated at

2026-10-16T00:59:26.194129Z

## Published at

2026-10-16T03:33:07.055925Z

## Doi



## First published url

https://doi.org/10.1016/j.jmst.2025.08.017

## Date published

2025-08-29

## Recorded date published

2026-5

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Dynamics of Portevin-Le Chatelier banding revealed through grain refinement
    in high-Mn austenitic steel: Sequential overcoming of necking'
  title_type: original
  lang: en

## Description

- description: Dynamics of Portevin-Le Chatelier (PLC) banding were thoroughly revealed
    through grain refinement in high-Mn austenitic steel. Fully recrystallized 22Mn-0.6C
    steels (wt%), with mean grain sizes ranging from 8.4 μm (coarse grain, CG) to
    0.82 μm (ultrafine grain, UFG), were successfully fabricated through re- peated
    cold rolling and subsequent annealing. Serrations were observed on the global
    stress-strain curves of all specimens, while the UFG specimen showed notably weak
    serrations in the early stages of deforma- tion. Using the digital image correlation
    (DIC) technique, the serration behavior on the stress-strain curves of all specimens
    was found to perfectly correspond to the local heterogeneous deformation characterized
    by the formation, propagation, and annihilation of PLC bands. With grain refinement,
    localized deforma- tion within the PLC band decreased, while the deformation beyond
    it became more pronounced, resulting in more homogeneous deformation across the
    entire gage part. This study presents the first experimental evaluation of the
    local strain-hardening rate through the simultaneous application of in-situ synchrotron
    XRD and DIC measurements during the tensile test. It was found that necking was
    periodically triggered but was soon overcome through the high strain hardening
    within the propagating PLC bands, which was achieved through the localized multiplication
    of dislocations and the formation of stacking faults. The UFG specimen exhibited
    greater local strain hardening than the CG specimen, induced by the formation
    of more dislocations and stacking faults. Such an increase in local strain hardening
    with grain refinement resulted in more homogeneous deformation behavior and consequently
    weaker serrations in the early stages of deformation.
  description_type: abstract
  lang: und

## Creator

- name: Sukyoung Hwang
  role: author
- name: Myeong-heom Park
  role: author
- name: Yu Bai
  role: author
- name: Takumi Suzumura
  role: author
- name: Ryo Asada
  role: author
- name: Avala Lavakumar
  role: author
- name: Jesada Punyafu
  role: author
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411
  organization: National Institute for Materials Science
- name: Hiroki Adachi
  role: author
- name: Toshiyuki Fujii
  role: author
- name: Nobuhiro Tsuji
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Serration, Portevin–Le Chatelier (PLC) band
  schema: not_defined
- subject: Digital image correlation (DIC)
  schema: not_defined
- subject: In-situ synchrotron XRD diffraction
  schema: not_defined
- subject: Grain refinement
  schema: not_defined
- subject: Local strain hardening
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-01-14

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Journal of Materials Science & Technology
  issn: '10050302'
  volume: '254'
  start_page: 234
  end_page: 248

## Conference



## Related item



## Funding

- funder_name: Institute of Science Tokyo
- identifier: 21K20401
  funder_name: Japan Science and Technology Agency
- identifier: 20K14608
  funder_name: Japan Science and Technology Agency
- identifier: JPMJCR1994
  funder_name: Japan Science and Technology Agency

## Instrument



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## Fileset

- id: 6f7fc011-05f5-4595-8c1e-21a9cee1741c
  filename: 2026_JMST_(Serration_Hwang).pdf
  content_type: application/pdf
  size: 5943148
  md5: 6dbb90dc407be1e5b92db08d46a2c4a2

## Thumbnail

fileset_id: 6f7fc011-05f5-4595-8c1e-21a9cee1741c
filename: 2026_JMST_(Serration_Hwang).pdf