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Laser-powder bed fusion in-process dispersion of reinforcing ceramic nanoparticles onto powder beds via colloid nebulisation

Mussatto, Andre ORCID: 0000-0001-5335-7968, Groarke, Robert, Vijayaraghavan, Rajani K. ORCID: 0000-0003-1096-448X, Obeidi, Muhannad A. ORCID: 0000-0003-2733-3828, MacLoughlin, Ronan ORCID: 0000-0002-3164-1607, McNally, Patrick J. ORCID: 0000-0003-2798-5121, Nicolosi, Valeria ORCID: 0000-0002-7637-4813, Delauré, Yan ORCID: 0000-0002-7151-9278 and Brabazon, Dermot ORCID: 0000-0003-3214-6381 (2022) Laser-powder bed fusion in-process dispersion of reinforcing ceramic nanoparticles onto powder beds via colloid nebulisation. Materials Chemistry and Physics, 287 . ISSN 0254-0584

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Abstract

Functionally grading material composition in laser-powder bed fusion grants the potential for manufacturing complex components with tailored properties. The challenge in achieving this is that the current laser-powder bed fusion machine technology is designed to process only powdered feedstock materials. This study presents a multi-feedstock material printing methodology for laser-powder bed fusion. Utilising colloid nebulisation, tungsten carbide nanoparticles were successfully deposited onto powder beds of stainless steel 316L during the laser-powder bed fusion process. By this means, a controlled volume of tungsten carbide nanoparticles was uniformly dispersed onto powder beds under the inert processing chamber atmosphere. As a result, specimens printed with this methodology showed an increase in strength. Similarly, the colloid medium played an important role in the resulting microstructures. It led to the formation of consistent and stable meltpools and a strong crystallographic texture. Recommendations are given for the successful dispersion of higher volumes of nanoparticles. Additionally, insights into application prospects for material nebulisation in laser-powder bed fusion are presented and discussed.

Item Type:Article (Published)
Refereed:Yes
Additional Information:Article number: 126245
Uncontrolled Keywords:Multi-material powder bed fusion; Colloid nebulisation; Metal matrix composite; Stainless steel; 316LTungsten carbide
Subjects:Engineering > Materials
Engineering > Mechanical 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://doi.org/10.1016/j.matchemphys.2022.126245
Copyright Information:© 2022 The Authors. Open access (CC-BY 4.0)
ID Code:27248
Deposited On:23 May 2022 12:59 by Andre Mussatto . Last Modified 27 May 2022 13:15

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