# Corrosion Resistance Enhancement of Type 420J2 Martensitic Stainless Steel by Laser Thermal Processing

https://mdr.nims.go.jp/datasets/4dd249bf-2876-48c1-b3df-50a3c459ae5a

## File

- [[xxx]Manaka_2026_J._Electrochem._Soc._173_101502.pdf](https://mdr.nims.go.jp/filesets/9af9fa0d-fbcb-4ba5-9ff9-8e1cf5e105e1/download) ([Detail](https://mdr.nims.go.jp/filesets/9af9fa0d-fbcb-4ba5-9ff9-8e1cf5e105e1.md))

## Id

4dd249bf-2876-48c1-b3df-50a3c459ae5a

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-06-15T23:45:11.098844Z

## Updated at

2026-06-16T00:56:40.503504Z

## Published at

2026-06-16T03:26:20.200421Z

## Doi



## First published url

https://doi.org/10.1149/1945-7111/ae697d

## Date published

2026-05-28

## Recorded date published

2026-5-28

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Corrosion Resistance Enhancement of Type 420J2 Martensitic Stainless Steel
    by Laser Thermal Processing
  title_type: original
  lang: en

## Description

- description: 'A laser thermal processing method was developed to enhance the corrosion
    resistance of martensitic stainless steels, which typically offer high hardness
    but poor corrosion resistance. Specifically, type 420J2 martensitic stainless
    steel (420J2 SS) plates were subjected to laser irradiation, causing rapid heating
    and quenching that modified the microstructure. After processing, three distinct
    layers were observed from the surface downward: a remelted layer, a phase-transformed
    layer, and the substrate. The remelted layer was formed by localized melting from
    the laser heat, followed by rapid quenching and solidification. Corrosion-inducing
    inclusions within this layer melted into the matrix, and their reprecipitation
    was effectively suppressed. The microstructure of the remelted layer comprised
    fine needle-like features, along with martensitic and austenitic phases. Due to
    the dominance of the martensitic phase, the hardness of the remelted layer increased
    significantly. Consequently, the remelted surface exhibited improved corrosion
    resistance and hardness. In contrast, the microstructure and corrosion resistance
    of the inner layer remained similar to those of the untreated 420J2 SS, indicating
    that the laser thermal processing did not adversely affect the substrate. Overall,
    this method provides an effective means of improving both the corrosion resistance
    and surface hardness of martensitic stainless steels.'
  description_type: abstract
  lang: und

## Creator

- name: Tomoyo Manaka
  role: author
- name: Yusuke Tsutsumi
  role: author
  orcid: https://orcid.org/0000-0002-9483-1256
  organization: National Institute for Materials Science
- name: Mitsuhiro Goto
  role: author
- name: Mariko Kadowaki
  role: author
  orcid: https://orcid.org/0000-0002-8988-3545
  organization: National Institute for Materials Science
- name: Yoshiharu Murase
  role: author
  orcid: https://orcid.org/0000-0001-7390-851X
  organization: National Institute for Materials Science
- name: Hideki Katayama
  role: author
  orcid: https://orcid.org/0000-0001-7947-4687
  organization: National Institute for Materials Science
- name: Takuya Ishimoto
  role: author
- name: Takao Hanawa
  role: author

## Contact agent



## Publisher

organization: National Institute for Materials Science
ror: https://ror.org/

## Managing organization



## Keyword

- subject: Stainless steel
  schema: not_defined
- subject: Corrosion resistance
  schema: not_defined
- subject: Laser processing
  schema: not_defined
- subject: Hardness
  schema: not_defined
- subject: Martensitic stainless steel
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/
  date_licensed: 2026-05-18

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of The Electrochemical Society
  issn: '00134651'
  volume: '173'
  issue: '10'
  article_number: '101502'

## Conference



## Related item



## Funding

- identifier: JP22KJ1204
  funder_name: Japan Society for the Promotion of Science
- funder_name: The Japan Institute of Metals and Materials
- funder_name: Institute of Light Metals

## 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



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## Custom property



## Fileset

- id: 9af9fa0d-fbcb-4ba5-9ff9-8e1cf5e105e1
  filename: "[xxx]Manaka_2026_J._Electrochem._Soc._173_101502.pdf"
  content_type: application/pdf
  size: 2021129
  md5: 32bc7d8876b4de132e3797600c6d3aff

## Thumbnail

fileset_id: 9af9fa0d-fbcb-4ba5-9ff9-8e1cf5e105e1
filename: "[xxx]Manaka_2026_J._Electrochem._Soc._173_101502.pdf"