# Particle Size Effect on Powder Packing Properties and Molten Pool Dimensions in Laser Powder Bed Fusion Simulation

https://mdr.nims.go.jp/datasets/12243386-0976-46ff-b5a7-627c2f08421d

## File

- [片桐3_最終印刷版jmmp-08-00071.pdf](https://mdr.nims.go.jp/filesets/bfb2a211-c849-4a82-a075-412702b8a12b/download) ([Detail](https://mdr.nims.go.jp/filesets/bfb2a211-c849-4a82-a075-412702b8a12b.md))

## Id

12243386-0976-46ff-b5a7-627c2f08421d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-04T05:35:31.588955Z

## Updated at

2024-04-05T03:30:21.443472Z

## Published at

2024-04-05T03:30:21.889514Z

## Doi



## First published url

https://doi.org/10.3390/jmmp8020071

## Date published

2024-04-01

## Recorded date published



## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Particle Size Effect on Powder Packing Properties and Molten Pool Dimensions
    in Laser Powder Bed Fusion Simulation
  title_type: original
  lang: en

## Description

- description: "Various defects are produced during laser powder bed fusion (L-PBF)
    process, and can affect the quality of the fabricated part. Past studies have
    revealed that the defects formed are correlated with molten pool dimensions. Powder
    particles are thinly spread on a substrate during L-PBF process; hence, powder
    packing properties should influence the molten pool dimensions. This study has
    evaluated influence of particle size on powder packing properties and molten pool
    dimension obtained from numerical simulation. Using particles with different average
    diameter (Dav) of 24, 28, 32, 36, and 40 $\\mu$m, a series of discrete-element
    method (DEM) simulations were performed. Packing fraction obtained from DEM simulations
    became high as Dav became small. Several particles could piled up for small Dav,
    whereas particles spread with almost one-particle diameter thickness for large
    Dav. Moreover, packing structure was inhomogeneous and sparse for large Dav. Then
    we performed multiphysics computational fluid dynamics (CFD) simulations incorporating
    particles' position as initial solid metal volume. Molten pool width obtained
    from the simulations was hardly dependent on the Dav and was roughly equivalent
    to the laser diameter used in the simulations. In contrast, molten pool depth
    became small as Dav became small. The results suggest that importance of specific
    surface area, that is, the powder bed with smaller Dav can absorb larger thermal
    energy because of the larger specific surface area due to the large powder bed
    thickness and piling up multiple particles. \r\n"
  description_type: abstract
  lang: und

## Creator

- name: Jun Katagiri
  role: author
  orcid: https://orcid.org/0000-0002-6399-1951
- name: Sukeharu Nomoto
  role: author
  orcid: https://orcid.org/0000-0001-6503-4699
- name: Masahiro Kusano
  role: author
  orcid: https://orcid.org/0000-0002-5061-0195
- name: Makoto Watanabe
  role: author
  orcid: https://orcid.org/0000-0002-5064-9583

## Contact agent



## Publisher

organization: MDPI AG

## Managing organization



## Keyword

- subject: laser powder bed fusion
  schema: not_defined
- subject: particle size
  schema: not_defined
- subject: powder spreading
  schema: not_defined
- subject: discrete-element method
  schema: not_defined
- subject: packing fraction
  schema: not_defined
- subject: packing homogeneity
  schema: not_defined
- subject: multiphysics CFD simulation
  schema: not_defined

## Rights

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

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal

- title: Journal of Manufacturing and Materials Processing
  issn: '25044494'
  volume: '8'
  issue: '2'
  article_number: '71'

## Conference



## Related item



## Funding

- identifier: JPJ004596
  funder_name: Innovative Science and Technology Initiative for Security

## 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: bfb2a211-c849-4a82-a075-412702b8a12b
  filename: 片桐3_最終印刷版jmmp-08-00071.pdf
  content_type: application/pdf
  size: 5752197
  md5: 4739881060b3075df5a7a66ff9171a43

## Thumbnail

fileset_id: bfb2a211-c849-4a82-a075-412702b8a12b
filename: 片桐3_最終印刷版jmmp-08-00071.pdf