Impact of powder recoating speed on built properties in PBF-LB process

Laura Cordova; Zhuoer Chen

doi:10.1016/j.procir.2022.10.061

Impact of powder recoating speed on built properties in PBF-LB process

Laura Cordova^*, Zhuoer Chen

^*Corresponding author for this work

Applied Mechanics

Research output: Contribution to journal › Conference article › Academic › peer-review

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Abstract

In powder bed fusion laser-beam (PBF-LB), powder deposition parameters are not commonly adjusted for different materials. In this study, the recoater speed was varied from 150 mm/s to 500 mm/s to study its influence on processability of two different powders. The 420 steel powder possesses better flowability and higher packing density than Inconel 718 at different testing speeds. This is reflected on surface roughness (S_a): Inconel 718 samples show larger variations than 420 steel ones across different locations on the build plate and under different recoating speeds. This demonstrates the necessity of accounting for powder properties for robust PBF-LB processing.

Original language	English
Pages (from-to)	125-129
Number of pages	5
Journal	Procedia CIRP
Volume	115
DOIs	https://doi.org/10.1016/j.procir.2022.10.061
Publication status	Published - 2022
Event	10th CIRP Global Web Conference on Material Aspects of Manufacturing Processes 2022 - Gothenburg, Sweden Duration: 25 Oct 2022 → 27 Oct 2022 Conference number: 10

Keywords

LPBF
Porosity
Powder Bed Fusion - Laser Beam
Recoating
Surface roughness

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10.1016/j.procir.2022.10.061Licence: CC BY-NC-ND

ArticleFinal published version, 1.27 MBLicence: CC BY-NC-ND

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title = "Impact of powder recoating speed on built properties in PBF-LB process",

abstract = "In powder bed fusion laser-beam (PBF-LB), powder deposition parameters are not commonly adjusted for different materials. In this study, the recoater speed was varied from 150 mm/s to 500 mm/s to study its influence on processability of two different powders. The 420 steel powder possesses better flowability and higher packing density than Inconel 718 at different testing speeds. This is reflected on surface roughness (Sa): Inconel 718 samples show larger variations than 420 steel ones across different locations on the build plate and under different recoating speeds. This demonstrates the necessity of accounting for powder properties for robust PBF-LB processing.",

keywords = "LPBF, Porosity, Powder Bed Fusion - Laser Beam, Recoating, Surface roughness",

author = "Laura Cordova and Zhuoer Chen",

note = "Funding Information: This study was performed with support from European Union{\textquoteright}s Horizon 2020 research and innovation program (820774) within project MANUELA -Additive Manufacturing using Metal Pilot Line and Competence Centre for Additive Manufacture-Metal (CAM2) (2016-05175) and the Production Area of Advance at Chalmers. H{\"o}gan{\"a}s AB is greatly acknowledged for their valuable support. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.. All rights reserved.; 10th CIRP Global Web Conference on Material Aspects of Manufacturing Processes 2022 ; Conference date: 25-10-2022 Through 27-10-2022",

year = "2022",

doi = "10.1016/j.procir.2022.10.061",

language = "English",

volume = "115",

pages = "125--129",

journal = "Procedia CIRP",

issn = "2212-8271",

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T1 - Impact of powder recoating speed on built properties in PBF-LB process

AU - Cordova, Laura

AU - Chen, Zhuoer

N1 - Conference code: 10

PY - 2022

Y1 - 2022

N2 - In powder bed fusion laser-beam (PBF-LB), powder deposition parameters are not commonly adjusted for different materials. In this study, the recoater speed was varied from 150 mm/s to 500 mm/s to study its influence on processability of two different powders. The 420 steel powder possesses better flowability and higher packing density than Inconel 718 at different testing speeds. This is reflected on surface roughness (Sa): Inconel 718 samples show larger variations than 420 steel ones across different locations on the build plate and under different recoating speeds. This demonstrates the necessity of accounting for powder properties for robust PBF-LB processing.

AB - In powder bed fusion laser-beam (PBF-LB), powder deposition parameters are not commonly adjusted for different materials. In this study, the recoater speed was varied from 150 mm/s to 500 mm/s to study its influence on processability of two different powders. The 420 steel powder possesses better flowability and higher packing density than Inconel 718 at different testing speeds. This is reflected on surface roughness (Sa): Inconel 718 samples show larger variations than 420 steel ones across different locations on the build plate and under different recoating speeds. This demonstrates the necessity of accounting for powder properties for robust PBF-LB processing.

KW - LPBF

KW - Porosity

KW - Powder Bed Fusion - Laser Beam

KW - Recoating

KW - Surface roughness

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DO - 10.1016/j.procir.2022.10.061

M3 - Conference article

AN - SCOPUS:85145241727

VL - 115

SP - 125

EP - 129

JO - Procedia CIRP

JF - Procedia CIRP

SN - 2212-8271

T2 - 10th CIRP Global Web Conference on Material Aspects of Manufacturing Processes 2022

Y2 - 25 October 2022 through 27 October 2022

ER -

Impact of powder recoating speed on built properties in PBF-LB process

Abstract

Keywords

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