Version 1
: Received: 1 May 2024 / Approved: 2 May 2024 / Online: 2 May 2024 (08:06:07 CEST)
How to cite:
Salmi, A.; Piscopo, G.; Atzeni, E.; Pilagatti, A. N. Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition. Preprints2024, 2024050103. https://doi.org/10.20944/preprints202405.0103.v1
Salmi, A.; Piscopo, G.; Atzeni, E.; Pilagatti, A. N. Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition. Preprints 2024, 2024050103. https://doi.org/10.20944/preprints202405.0103.v1
Salmi, A.; Piscopo, G.; Atzeni, E.; Pilagatti, A. N. Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition. Preprints2024, 2024050103. https://doi.org/10.20944/preprints202405.0103.v1
APA Style
Salmi, A., Piscopo, G., Atzeni, E., & Pilagatti, A. N. (2024). Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition. Preprints. https://doi.org/10.20944/preprints202405.0103.v1
Chicago/Turabian Style
Salmi, A., Eleonora Atzeni and Adriano Nicola Pilagatti. 2024 "Evaluation of Porosity in AISI 316L Samples Processed by Laser-Powder Directed Energy Deposition" Preprints. https://doi.org/10.20944/preprints202405.0103.v1
Abstract
Laser-Powder Directed Energy Deposition (DED-LB/Powder) is an additive manufacturing process that is gaining popularity in the manufacturing industry due to its numerous advantages, particularly in repairing operations. However, its application is often limited to case studies due to some critical issues that need to be addressed, such as the degree of internal porosity. This paper investigates the effect of the most relevant process parameters of the DED-LB/Powder process on the level and distribution of porosity. Results indicate that, among the process parameters examined, porosity is less affected by travel speed and more influenced by powder mass flow rate and laser power. Additionally, a three-dimensional finite element transient model was introduced, which was able to predict the development and location of lack-of-fusion pores along the building direction.
Keywords
additive manufacturing; process parameters; laser powder directed energy deposition; porosity; FE simulation; 316L
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
