# Effects of time per layer and part geometry on thermal history and microcracking in the fabrication of nickel superalloy samples by laser powder bed fusion

https://mdr.nims.go.jp/datasets/f2de22e8-41e7-4ced-a166-66e1aaaf1e66

## File

- [1-s2.0-S2214860424000332-main.pdf](https://mdr.nims.go.jp/filesets/40f9dabc-fdee-46f0-a389-c1b523259340/download) ([Detail](https://mdr.nims.go.jp/filesets/40f9dabc-fdee-46f0-a389-c1b523259340.md))

## Id

f2de22e8-41e7-4ced-a166-66e1aaaf1e66

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-10T01:02:24.237322Z

## Updated at

2024-04-10T07:30:19.054261Z

## Published at

2024-04-10T07:30:19.145134Z

## Doi



## First published url

https://doi.org/10.1016/j.addma.2024.103987

## Date published

2024-01-18

## Recorded date published

2024-1

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Effects of time per layer and part geometry on thermal history and microcracking
    in the fabrication of nickel superalloy samples by laser powder bed fusion
  title_type: original
  lang: en

## Description

- description: In this work, the purpose of the current study is to understand the
    effects of time per layer and part geometry on microcracking behavior as well
    as thermal history, microstructure, and mechanical properties in Inconel 738 LC
    samples. A part-scale finite element thermal analysis confirmed that significant
    heat accumulation occurred during the process in the samples with constricted
    geometry with short time per layer. In the fabricated IN738LC samples with the
    heat accumulation, more coarse microstructure, greater hardness, and severe cracking
    size and density were observed. The cracking mechanism based on the RDG model
    with Rosenthal’s analytical temperature field suggests that heat accumulation
    during the L-PBF process should be avoided to fabricate crack-free IN738LC parts,
    and a sufficiently long time per layer is preferable.
  description_type: abstract
  lang: und

## Creator

- name: Masahiro Kusano
  role: author
  orcid: https://orcid.org/0000-0002-5061-0195
  organization: National Institute for Materials Science
- name: Yusuke Takata
  role: author
  organization: National Institute for Materials Science
- name: Atsushi Yumoto
  role: author
- name: Makoto Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-5064-9583
  organization: National Institute for Materials Science

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: Laser powder bed fusion
  schema: not_defined
- subject: Time per layer
  schema: not_defined
- subject: Constricted geometry
  schema: not_defined
- subject: Thermal analysis
  schema: not_defined
- subject: Microcracking
  schema: not_defined
- subject: Inconel 738 LC
  schema: not_defined

## Rights

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

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## Data origin



## Embargo



## Journal

- title: Additive Manufacturing
  issn: '22148604'
  start_page: 103987
  article_number: '103987'

## Conference



## Related item



## Funding

- funder_name: Japan Society for the Promotion of Science

## Instrument



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## Measurement method



## Specimen



## Chemical composition



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## Fileset

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  filename: 1-s2.0-S2214860424000332-main.pdf
  content_type: application/pdf
  size: 19008048
  md5: df9a48017c7c1709d8273c7a53525a2c

## Thumbnail

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filename: 1-s2.0-S2214860424000332-main.pdf