# Comparison of hydrogen diffusion properties and hydrogen-induced ductility loss of additively and conventionally manufactured 17-4PH stainless steel

https://mdr.nims.go.jp/datasets/609abca4-01f3-40db-9e71-3bdeb2351ae5

## Files

- [2024-4_著者最終稿.pdf](https://mdr.nims.go.jp/filesets/ee72f51d-fec9-4b87-8c29-5851efc9b986/download) ([Detail](https://mdr.nims.go.jp/filesets/ee72f51d-fec9-4b87-8c29-5851efc9b986.md))

## Id

609abca4-01f3-40db-9e71-3bdeb2351ae5

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-12-16T09:30:43.822868Z

## Updated at

2024-12-17T06:58:49.941892Z

## Published at

2026-05-13T23:28:37.141739Z

## Doi

https://doi.org/10.48505/nims.5174

## First published url

https://doi.org/10.1016/j.engfailanal.2024.108437

## Date published

2024-05-14

## Recorded date published

2024-8

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Comparison of hydrogen diffusion properties and hydrogen-induced ductility
    loss of additively and conventionally manufactured 17-4PH stainless steel
  title_type: original
  lang: en

## Description

- description: Hydrogen diffusion properties and hydrogen-induced ductility loss of
    an as-built 17-4PH stainless steel fabricated by the additive manufacturing (AM)
    process were investigated using hydrogen-charged specimens exposed to high-pressure
    gaseous hydrogen and the results were compared with those of a conventionally
    manufactured 17-4PH steel under solution-treated (ST) and precipitation-hardened
    (PH) conditions. Peak-aged (H900) and over-aged (H1150) steels were prepared for
    the PH conditions. The austenite fraction of the AM materials was at most three
    times higher than that of the ST material. Except for the H900 material, the saturated
    hydrogen content of both the AM and conventional materials was dominated by the
    austenite in the materials. Hydrogen trapping by Cu precipitation, not the austenite,
    was considered to be mainly responsible for the saturated hydrogen content of
    the H900 material. The hydrogen diffusivity for both the AM and ST materials also
    decreased with higher austenite fractions. In the uncharged situation, the reduction
    in area (RA) of the AM material was larger than that of the conventional materials.
    In the hydrogen-charged situation, the AM material had a lower relative reduction
    in area (RRA) compared to that of the ST material, although their tested tensile
    strengths were similar. The hydrogen-charged AM and ST materials had quasi-cleavage
    (QC) surfaces. Voids elongated in the direction perpendicular to the loading direction,
    which corresponded with the QC facets, were observed from the longitudinal cross
    sections of both the AM and ST materials, suggesting the contribution of hydrogen–dislocation
    interactions.
  description_type: abstract
  lang: und

## Creator

- name: Junichiro Yamabe
  role: author
- name: Soma Kato
  role: author
- name: Kazuyuki Morishita
  role: author
- name: Kentaro Wada
  role: author
  orcid: https://orcid.org/0000-0002-3204-7087
  organization: National Institute for Materials Science
  ror: https://ror.org/026v1ze26

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Hydrogen embrittlement
  schema: not_defined
- subject: 17-4 PH steel
  schema: not_defined
- subject: Additive manufacturing
  schema: not_defined
- subject: Slow strain-rate tensile testing
  schema: not_defined
- subject: Retained austenite
  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: 2024-05-14
end_date: 2026-05-15

## Journal

- title: Engineering Failure Analysis
  issn: '13596454'
  volume: '162'
  article_number: '108437'

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## Fileset

- id: ee72f51d-fec9-4b87-8c29-5851efc9b986
  filename: 2024-4_著者最終稿.pdf
  content_type: application/pdf
  size: 2276080
  md5: 8abe900105cb48006009d16bc6a0e0e7

## Thumbnail

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filename: 2024-4_著者最終稿.pdf