# Effect of martensite hardness on mechanical properties and stress/strain-partitioning behavior in ferrite + martensite dual-phase steels

https://mdr.nims.go.jp/datasets/6f69c85b-e57c-4763-84bb-04bd1356d7dd

## File

- [MSEA-D-24-03348_R1_MDSE.pdf](https://mdr.nims.go.jp/filesets/3f147796-cd69-4854-8076-4d50affd8b9b/download) ([Detail](https://mdr.nims.go.jp/filesets/3f147796-cd69-4854-8076-4d50affd8b9b.md))

## Id

6f69c85b-e57c-4763-84bb-04bd1356d7dd

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-01T23:39:19.867562Z

## Updated at

2024-12-02T02:26:02.659685Z

## Published at

2026-09-25T23:26:51.424963Z

## Doi

https://doi.org/10.48505/nims.5066

## First published url

https://doi.org/10.1016/j.msea.2024.147301

## Date published

2024-09-26

## Recorded date published

2024-11

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Effect of martensite hardness on mechanical properties and stress/strain-partitioning
    behavior in ferrite + martensite dual-phase steels
  title_type: original
  lang: en

## Description

- description: Low-carbon dual-phase (DP) steels composed of ferrite and martensite
    are widely used in automotive industries due to their good combination of strength
    and ductility and remarkable strain-hardening ability. Such exceptional mechanical
    properties of DP steels arise from microstructural deformation heterogeneity due
    to the different deformation roles of soft ferrite and hard martensite. The present
    study investigated mechanical properties and local deformation behavior of DP
    steels having different martensite hardness (strength) using digital image correlation
    (DIC) technique and in-situ X-ray diffraction (XRD) experiment during tensile
    deformation. The martensite hardness was reduced by tempering treatment, and its
    mechanical properties were compared with the as-quenched DP specimen by tensile
    testing. The tempered DP specimen exhibited reduced strength but enhanced ductility,
    especially in post-uniform elongation, compared to the as-quenched DP specimen.
    DIC-strain analysis indicated that the tempering effectively inhibited strain
    localization, allowing a greater contribution of martensite to plastic deformation.
    On the other hand, the in-situ XRD analysis revealed that the tempering significantly
    restricted the stress-increasing potential of martensite. Our results suggest
    that martensite, acting as a hard domain, plays a significant role in enhancing
    strain-hardening ability and achieving large uniform elongation due to its high
    stress-increasing potential. However, the presence of hard martensite also imposes
    restrictions on post-uniform elongation due to the strong strain localization
    induced in microstructures.
  description_type: abstract
  lang: und

## Creator

- name: Myeong-heom Park
  role: author
- name: Yuto Fujimura
  role: author
- name: Akinobu Shibata
  role: author
  orcid: https://orcid.org/0000-0001-8577-6411
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Nobuhiro Tsuji
  role: author

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: dual-phase steel
  schema: not_defined
- subject: mechanical properties
  schema: not_defined
- subject: digital image correlation (DIC)
  schema: not_defined
- subject: strain distribution
  schema: not_defined
- subject: internal stress
  schema: not_defined
- subject: stress-partitioning
  schema: not_defined
- subject: heterogeneous deformation
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2024-09-26
end_date: 2026-09-26

## Journal

- title: 'Materials Science and Engineering: A'
  issn: '09215093'
  volume: '916'
  article_number: '147301'

## Conference



## Related item



## Funding

- funder_name: Core Research for Evolutional Science and Technology
- 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



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## Custom property



## Fileset

- id: 3f147796-cd69-4854-8076-4d50affd8b9b
  filename: MSEA-D-24-03348_R1_MDSE.pdf
  content_type: application/pdf
  size: 2466214
  md5: cbe0becf16d5e64aee575c4db3972bf9

## Thumbnail

fileset_id: 3f147796-cd69-4854-8076-4d50affd8b9b
filename: MSEA-D-24-03348_R1_MDSE.pdf