A technical review of the challenges of powder recycling in the laser powder bed fusion additive manufacturing process

Gowtham Soundarapandiyan; Carol  Johnston; Raja H.U. Khan; Bo Chen; Michael Fitzpatrick

doi:10.1049/tje2.12013

A technical review of the challenges of powder recycling in the laser powder bed fusion additive manufacturing process

Gowtham Soundarapandiyan, Carol Johnston, Raja H.U. Khan, Bo Chen, Michael Fitzpatrick

Faculty of Engineering, Environment & Computing

The Welding Institute (TWI)

Research output: Contribution to journal › Article › peer-review

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Abstract

Laser powder bed fusion (L-PBF) is one of the most widely used additive manufacturing techniques for fabrication of components with complex geometries for various industrial applications including aerospace, medical and automotive. The unconsumed powder after part manufacturing is often recovered and recycled to improve process efficiency. How- ever, some of the particles in the recycled powder can have different physical and chemical properties from those in the virgin powder owing to their exposure to the complex envi- ronment during the manufacturing process. In addition, some contaminants can be intro- duced in the recycled powder due to poor process control. A number of studies have been published in the past few years revealing the effects ofpowder recycling on the build prop- erties. The present work aims to highlight the key phenomena during the manufacturing process that caused degradation to the recycled powder. Further to this, some comments, gaps

Original language	English
Pages (from-to)	97-103
Number of pages	7
Journal	IET Journal of Engineering
Volume	2021
Issue number	2
DOIs	https://doi.org/10.1049/tje2.12013
Publication status	Published - 21 Jan 2021

Bibliographical note

This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Funder

Engineering and Physical Sciences Research Council. Grant Number: EP/R043973/1
Lloyd's Register Foundation. Grant Number: GS012018COV

Keywords

Additive Manufacturing
Laser additive manufacture
Powder reuse
Powder characteristics

Access to Document

10.1049/tje2.12013Licence: CC BY

PublishedFinal published version, 4.22 MBLicence: CC BY

Cite this

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title = "A technical review of the challenges of powder recycling in the laser powder bed fusion additive manufacturing process",

abstract = "Laser powder bed fusion (L-PBF) is one of the most widely used additive manufacturing techniques for fabrication of components with complex geometries for various industrial applications including aerospace, medical and automotive. The unconsumed powder after part manufacturing is often recovered and recycled to improve process efficiency. How- ever, some of the particles in the recycled powder can have different physical and chemical properties from those in the virgin powder owing to their exposure to the complex envi- ronment during the manufacturing process. In addition, some contaminants can be intro- duced in the recycled powder due to poor process control. A number of studies have been published in the past few years revealing the effects ofpowder recycling on the build prop- erties. The present work aims to highlight the key phenomena during the manufacturing process that caused degradation to the recycled powder. Further to this, some comments, gaps",

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author = "Gowtham Soundarapandiyan and Carol Johnston and Khan, {Raja H.U.} and Bo Chen and Michael Fitzpatrick",

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AU - Soundarapandiyan, Gowtham

AU - Johnston, Carol

AU - Khan, Raja H.U.

AU - Chen, Bo

AU - Fitzpatrick, Michael

N1 - This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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N2 - Laser powder bed fusion (L-PBF) is one of the most widely used additive manufacturing techniques for fabrication of components with complex geometries for various industrial applications including aerospace, medical and automotive. The unconsumed powder after part manufacturing is often recovered and recycled to improve process efficiency. How- ever, some of the particles in the recycled powder can have different physical and chemical properties from those in the virgin powder owing to their exposure to the complex envi- ronment during the manufacturing process. In addition, some contaminants can be intro- duced in the recycled powder due to poor process control. A number of studies have been published in the past few years revealing the effects ofpowder recycling on the build prop- erties. The present work aims to highlight the key phenomena during the manufacturing process that caused degradation to the recycled powder. Further to this, some comments, gaps

AB - Laser powder bed fusion (L-PBF) is one of the most widely used additive manufacturing techniques for fabrication of components with complex geometries for various industrial applications including aerospace, medical and automotive. The unconsumed powder after part manufacturing is often recovered and recycled to improve process efficiency. How- ever, some of the particles in the recycled powder can have different physical and chemical properties from those in the virgin powder owing to their exposure to the complex envi- ronment during the manufacturing process. In addition, some contaminants can be intro- duced in the recycled powder due to poor process control. A number of studies have been published in the past few years revealing the effects ofpowder recycling on the build prop- erties. The present work aims to highlight the key phenomena during the manufacturing process that caused degradation to the recycled powder. Further to this, some comments, gaps

KW - Additive Manufacturing

KW - Laser additive manufacture

KW - Powder reuse

KW - Powder characteristics

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A technical review of the challenges of powder recycling in the laser powder bed fusion additive manufacturing process

Abstract

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Keywords

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