# Breaking the strength-ductility trade-off in austenitic stainless steel at cryogenic temperatures: Mechanistic insights

https://mdr.nims.go.jp/datasets/a05eddb0-a414-481d-bf15-c8cd432dd4e4

## File

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## Id

a05eddb0-a414-481d-bf15-c8cd432dd4e4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-18T07:20:26.700857Z

## Updated at

2024-09-19T07:30:19.706911Z

## Published at

2024-09-19T07:30:20.312664Z

## Doi



## First published url

https://doi.org/10.1016/j.jmrt.2024.09.074

## Date published

2024-09-12

## Recorded date published

2024-11

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: 'Breaking the strength-ductility trade-off in austenitic stainless steel
    at cryogenic temperatures: Mechanistic insights'
  title_type: original
  lang: en

## Description

- description: At cryogenic temperatures, 316L austenitic stainless steels (ASSs)
    exhibit remarkable strength while retaining high ductility, defying conventional
    stress-strain trade-off. Despite extensive studies documenting the cryo-tensile
    properties of ASSs, the underlying mechanisms behind this phenomenon remain largely
    unexplored. This study systematically re-examines the tensile properties of 316L
    steel and the associated mechanisms across a range of low temperatures (293 K,
    223 K, 123 K, and 77 K). The reasons for the superior stress-strain balance (~
    80% GPa) are discussed through electron backscatter diffraction (EBSD) microstructure
    characteristics. The results undoubtedly suggested that the transformation mechanisms,
    specifically the shift from deformation twinning to martensitic transformation
    (γ → ε → α; γ → α), play a crucial role in enhancing elongation at cryogenic temperatures.
    At these temperatures, the Gibbs free energy difference between ε-martensite and
    γ-austenite approaching zero, resulting in slow martensite growth. The stress-strain
    curves at low temperatures satisfy the Considère criterion, indicating delayed
    necking under these conditions. This behavior is ascribed to presence of various
    hierarchical microstructures, including ε, α, γ-twins, ε-twins and their intersections,
    which act as sources of work hardening. This study provides new insights into
    deformation behavior of ASSs under cryogenic conditions.
  description_type: abstract
  lang: und

## Creator

- name: Digvijay Singh
  role: author
  orcid: https://orcid.org/0000-0003-4357-957X
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Fumiyoshi Yoshinaka
  role: author
  orcid: https://orcid.org/0000-0003-0534-7815
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Susumu Takamori
  role: author
  orcid: https://orcid.org/0000-0003-3422-9391
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26
- name: Satoshi Emura
  role: author
  orcid: https://orcid.org/0000-0001-5789-6408
  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: Elsevier BV

## Managing organization



## Keyword

- subject: Strength-ductility balance
  schema: not_defined
- subject: Austenitic stainless steel
  schema: not_defined
- subject: Martensitic transformation
  schema: not_defined
- subject: Deformation twinning
  schema: not_defined
- subject: Strain-hardening rate
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Materials Research and Technology
  issn: '22387854'
  volume: '33'
  start_page: 600
  end_page: 611

## Conference



## Related item



## Funding

- identifier: 21H01659
  funder_name: Japan Society for the Promotion of Science
- identifier: 23K13227
  funder_name: Japan Society for the Promotion of Science

## Instrument



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## Fileset

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  filename: 1-s2.0-S2238785424020799-main.pdf
  content_type: application/pdf
  size: 19545148
  md5: 259a6d460e4b0d197319cdf8d14c9b5d

## Thumbnail

fileset_id: 004ac175-cbdd-4b54-854b-6e513e62ec65
filename: 1-s2.0-S2238785424020799-main.pdf