# Evaluation of ductility-dip cracking under elevated-temperature loading in Inconel 738LC fabricated via laser powder bed fusion

https://mdr.nims.go.jp/datasets/31d00d03-aa43-48d1-813e-ff297f6e6fd3

## File

- [10.1016j.msea.2026.151108.pdf](https://mdr.nims.go.jp/filesets/14622b88-4e8f-41ee-971a-5ebfaeac7983/download) ([Detail](https://mdr.nims.go.jp/filesets/14622b88-4e8f-41ee-971a-5ebfaeac7983.md))

## Id

31d00d03-aa43-48d1-813e-ff297f6e6fd3

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-10-07T07:29:43.787755Z

## Updated at

2026-10-08T01:17:46.974789Z

## Published at

2026-10-08T03:27:58.774716Z

## Doi



## First published url

https://doi.org/10.1016/j.msea.2026.151108

## Date published

2026-09-21

## Recorded date published

2026-12

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Evaluation of ductility-dip cracking under elevated-temperature loading in
    Inconel 738LC fabricated via laser powder bed fusion
  title_type: original
  lang: en

## Description

- description: Ductility-dip cracking is a type of solid-state cracking with corresponding
    ductility loss that is associated with solidification processes in FCC metals
    and alloys, including Ni-based alloys, at temperatures of typically 0.5 – 0.7
    of the alloy melting point. The prevalence of this type of cracking during the
    tensile deformation of additively manufactured Inconel 738LC at elevated temperature
    was investigated in this study. Dog bone specimens were machined from IN738LC
    cylindrical samples fabricated via laser powder bed fusion. Noticeable ductility
    reduction was observed under tensile loading at 800°C – 900°C. Additionally, it
    was discovered that extensive cracking at intra-columnar high angle grain boundaries
    occurred along with significant gamma prime precipitation, following tensile loading
    at 900°C. Furthermore, formation of gammaʹ along the high angle intra-columnar
    grain boundaries was revealed via transmission electron microscopy. It is concluded
    that the presence of a thin, discontinuous layer of grain boundary gamma prime
    causes a loss of cohesion, and therefore weakens the boundaries, leading to easier
    grain boundary sliding, and ultimately, cracking.
  description_type: abstract
  lang: und

## Creator

- name: Christopher Mercer
  role: author
  orcid: https://orcid.org/0000-0002-4249-4075
- name: Taisuke T. Sasaki
  role: author
  orcid: https://orcid.org/0000-0002-5952-7638
- name: Yuka Hara
  role: author
- name: Toru Hara
  role: author
  orcid: https://orcid.org/0000-0002-9715-6444
- name: Masahiro Kusano
  role: author
  orcid: https://orcid.org/0000-0002-5061-0195
- name: Sukeharu Nomoto
  role: author
  orcid: https://orcid.org/0000-0001-6503-4699
- name: Makoto Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-5064-9583

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Inconel 738LC
  schema: not_defined
- subject: Additive manufacturing
  schema: not_defined
- subject: Ductility-dip cracking
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: 'Materials Science and Engineering: A'
  issn: '09215093'
  volume: '977'
  article_number: '151108'

## Conference



## Related item



## Funding

- identifier: AF-2022201-A3
  funder_name: The Amada Foundation
- identifier: JPMJKP25R1
  funder_name: Japan Science and Technology Agency
- identifier: 24H01008
  funder_name: Japan Society for the Promotion of Science

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## Chemical composition



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## Fileset

- id: 14622b88-4e8f-41ee-971a-5ebfaeac7983
  filename: 10.1016j.msea.2026.151108.pdf
  content_type: application/pdf
  size: 29950506
  md5: 4ac1099806a3164a12ca34ba8eca69cb

## Thumbnail

fileset_id: 14622b88-4e8f-41ee-971a-5ebfaeac7983
filename: 10.1016j.msea.2026.151108.pdf