# Real-time Observation of Stress-strain Behavior beyond Necking in Martensitic Steel by <i>in-situ</i> Synchrotron X-ray Diffraction

https://mdr.nims.go.jp/datasets/48c655a9-aad4-46ac-ac89-44edf5757c23

## Files

- [64_ISIJINT-2024-093.pdf](https://mdr.nims.go.jp/filesets/ad0aee71-a3de-47b2-818b-523f5d5e611b/download) ([Detail](https://mdr.nims.go.jp/filesets/ad0aee71-a3de-47b2-818b-523f5d5e611b.md))

## Id

48c655a9-aad4-46ac-ac89-44edf5757c23

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-11-04T23:34:10.568930Z

## Updated at

2024-11-07T07:30:41.085483Z

## Published at

2024-11-07T07:30:41.215176Z

## Doi



## First published url

https://doi.org/10.2355/isijinternational.isijint-2024-093

## Date published

2024-10-15

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Real-time Observation of Stress-strain Behavior beyond Necking in Martensitic
    Steel by <i>in-situ</i> Synchrotron X-ray Diffraction
  title_type: original
  lang: en

## Description

- description: In general, the stress-strain relationship of materials obtained by
    standard uniaxial tensile test, which can identify the hardening behavior only
    up to necking. Beyond necking, the material behavior is usually estimated by extrapolating
    or numerical modelling based on hardening behavior prior to the uniform elongation.
    This study investigated the post-necking hardening behavior of a fully martensitic
    steel by in-situ synchrotron X-ray diffraction during tensile deformation. From
    the in-situ results, the dislocation density, lattice strain and phase stress
    were calculated within the necked region and outside the necked region. A near
    steady-state flow with some hardening was observed within the necked region of
    a martensitic steel. However, beyond uniform elongation, outside the necked region
    the dislocation density and phase stress decreased slightly, suggesting stress
    relaxation. Steady-state flow and dislocation densities at large strains suggest
    dynamic recovery occurs in the martensitic steel at room temperature.
  description_type: abstract
  lang: und

## Creator

- name: Avala Lavakumar
  role: author
  orcid: https://orcid.org/0000-0001-8287-8607
- name: Sukyoung Hwang
  role: author
- name: Kazuho Okada
  role: author
  orcid: https://orcid.org/0000-0003-0183-4528
- name: Myeong-heom Park
  role: author
- name: Atul Haris Chokshi
  role: author
- name: Nobuhiro Tsuji
  role: author
  orcid: https://orcid.org/0000-0002-2132-1327

## Contact agent



## Publisher

organization: Iron and Steel Institute of Japan

## Managing organization



## Keyword

- subject: Martensitic Steel
  schema: not_defined
- subject: in-situ Synchrotron X-ray Diffraction
  schema: not_defined
- subject: Necking
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: ISIJ International
  issn: '09151559'
  volume: '64'
  issue: '12'
  article_number: ISIJINT-2024-093

## Conference



## Related item



## Funding



## 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: ad0aee71-a3de-47b2-818b-523f5d5e611b
  filename: 64_ISIJINT-2024-093.pdf
  content_type: application/pdf
  size: 2224397
  md5: 284fe3fe66ba3abd34e8c4cbcbf42395

## Thumbnail

fileset_id: ad0aee71-a3de-47b2-818b-523f5d5e611b
filename: 64_ISIJINT-2024-093.pdf