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Comprehensive assessment of spatter material generated during selective laser melting of stainless steel

Ahmed Obeidi, Muhannad orcid logoORCID: 0000-0003-2733-3828, Mussatto, Andre orcid logoORCID: 0000-0001-5335-7968, Groarke, Robert, Vijayaraghavan, Rajani K. orcid logoORCID: 0000-0003-1096-448X, Conway, Alex, Rossi, Frederico, McCarthy, Éanna, Clarkin, Owen orcid logoORCID: 0000-0001-6007-806X, O'Connor, Robert orcid logoORCID: 0000-0001-5794-6188 and Brabazon, Dermot orcid logoORCID: 0000-0003-3214-6381 (2020) Comprehensive assessment of spatter material generated during selective laser melting of stainless steel. Materials Today Communications, 25 . ISSN 2352-4928

Abstract
Laser-powder interaction and meltpool dynamics govern the physics behind the selective laser melting process. Spattering is an unavoidable phenomenon taking place during the process which is known to influence the integrity of the interaction between the incident laser beam and change the powder bed characteristics. This can consequently have a negative effect on final part integrity and quality of recycled powder. Hence, it is crucial to assess the characteristics of spatter particles to avoid the printing of defective parts. This work reports a detailed characterisation of spatter matter generated during selective laser melting of stainless steel. To better assess the characteristics of the spatter, the spattered material was benchmarked against the virgin powder. The results show no microstructural differences. However, the spatter morphological, chemical, optical and physical properties assessed in this work differ from the virgin powder. The results presented in this work are of significant contribution to the powder bed fusion field of additive manufacturing as it provides a unique insight to the characteristics of spatter matter generated from the processing of 316L stainless steel powder
Metadata
Item Type:Article (Published)
Refereed:Yes
Additional Information:Article number: 101294
Uncontrolled Keywords:Metal additive manufacturing; Spatter; Powder oxidation; Powder recycling; Stainless steel powder; Selective laser melting; Powder bed fusion
Subjects:Engineering > Materials
Engineering > Mechanical engineering
Engineering > Production engineering
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
DCU Faculties and Schools > Faculty of Engineering and Computing > School of Mechanical and Manufacturing Engineering
Research Initiatives and Centres > Advanced Processing Technology Research Centre (APTRC)
Research Initiatives and Centres > I-Form
Publisher:Elsevier
Official URL:https://dx.doi.org/10.1016/j.mtcomm.2020.101294
Copyright Information:© 2020 The Authors.
Funders:Science Foundation Ireland (SFI) under grant number 16/RC/3872 and is co-funded under the European Regional Development Fund
ID Code:26101
Deposited On:10 Aug 2021 16:46 by Dermot Brabazon . Last Modified 28 Nov 2023 12:09
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