316l stainless steel powders for additive manufacturing : Relationships of powder rheology, size, size distribution to part properties

Groarke, Robert and Danilenkoff, Cyril and Karam, Sara and McCarthy, Eanna and Michel, Bastien and Mussatto, Andre and Sloane, John and Neill, Aidan O. and Raghavendra, Ramesh and Brabazon, Dermot (2020) 316l stainless steel powders for additive manufacturing : Relationships of powder rheology, size, size distribution to part properties. Materials, 13 (23). pp. 1-19. ISSN 1996-1944

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Abstract

Laser-Powder Bed Fusion (L-PBF) of metallic parts is a highly multivariate process. An understanding of powder feedstock properties is critical to ensure part quality. In this paper, a detailed examination of two commercial stainless steel 316L powders produced using the gas atomization process is presented. In particular, the effects of the powder properties (particle size and shape) on the powder rheology were examined. The results presented suggest that the powder properties strongly influence the powder rheology and are important factors in the selection of suitable powder for use in an additive manufacturing (AM) process. Both of the powders exhibited a strong correlation between the particle size and shape parameters and the powder rheology. Optical microscope images of melt pools of parts printed using the powders in an L-PBF machine are presented, which demonstrated further the significance of the powder morphology parameters on resulting part microstructures.

Item Type:	Article
Additional Information:	Funding Information: Funding: This work was funded under the Enterprise Ireland Innovation Partnership Programme, grant award number IP/2016/00422A. This work was also part funded from research supported by a research grant from Science Foundation Ireland (SFI) under grant number 16/RC/3872 and is co-funded under the European Regional Development Fund and by I-Form industry partners. Publisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
Uncontrolled Keywords:	/dk/atira/pure/subjectarea/asjc/2500
Departments or Groups:
Depositing User:	Admin SSL
Date Deposited:	19 Oct 2022 23:09
Last Modified:	13 Aug 2023 22:50
URI:	http://repository-testing.wit.ie/id/eprint/4354

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