# Controlling heat accumulation through changing time per layer in laser powder bed fusion of nickel-based superalloy

https://mdr.nims.go.jp/datasets/7af18ae6-6e7d-4c1f-bf98-ebe6abc03890

## File

- [1-s2.0-S1526612524009071-main.pdf](https://mdr.nims.go.jp/filesets/ee5cbd70-b713-457d-839b-b0c787b29dde/download) ([Detail](https://mdr.nims.go.jp/filesets/ee5cbd70-b713-457d-839b-b0c787b29dde.md))

## Id

7af18ae6-6e7d-4c1f-bf98-ebe6abc03890

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-09-12T23:22:06.943490Z

## Updated at

2024-11-21T07:30:41.715854Z

## Published at

2024-11-21T07:30:41.820646Z

## Doi



## First published url

https://doi.org/10.1016/j.jmapro.2024.09.001

## Date published

2024-09-12

## Recorded date published

2024-12

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Controlling heat accumulation through changing time per layer in laser powder
    bed fusion of nickel-based superalloy
  title_type: original
  lang: en

## Description

- description: Feedforward/feedback control of laser powder bed fusion (L-PBF) was
    proposed over a decade ago but remains challenging. Despite numerous parameters
    involved, most studies have attempted to control the process by changing laser
    power only. On the other hand, previous studies have shown that reducing the time
    per layer (TPL) increases the heat accumulation during the process. Thus, this
    feasibility study aimed to validate TPL as a potential parameter to control the
    top surface temperature of a nickel-based superalloy sample during L-PBF. First,
    a part-scale finite element thermal analysis with feedback control was performed
    to verify the temperature control strategy. Then, the sample was experimentally
    fabricated with the temperature control by changing TPL. The measured temperature
    was successfully maintained at target values (400, 500, and 700oC), which were
    switched every 100 layers. In the as- fabricated IN738LC sample with the temperature
    control, the cellular microstructures coarsened by more than 0.5 μm and the hardness
    increased by approximately 50 HV as the target temperature was set higher. While
    demonstrating the potential of TPL for temperature control, its limitations in
    practical manufacturing were also discussed.
  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: 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: Temperature control
  schema: not_defined
- subject: Laser powder bed fusion
  schema: not_defined
- subject: Part-scale finite element thermal analysis
  schema: not_defined
- subject: Time per layer
  schema: not_defined
- subject: Nickel-base superalloy
  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 Manufacturing Processes
  issn: '15266125'
  volume: '131'
  start_page: 187
  end_page: 198

## 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



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## Custom property



## Fileset

- id: ee5cbd70-b713-457d-839b-b0c787b29dde
  filename: 1-s2.0-S1526612524009071-main.pdf
  content_type: application/pdf
  size: 10121154
  md5: 765ecbd3e52279f6e817cbf8270414f5

## Thumbnail

fileset_id: ee5cbd70-b713-457d-839b-b0c787b29dde
filename: 1-s2.0-S1526612524009071-main.pdf