• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
  • Home
  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Influence of gas atmosphere (Ar or He) on the laser powder bed fusion of a Ni-based alloy

Article dans une revue avec comité de lecture
Author
ccTRAORE, Socona
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
SCHNEIDER, M.
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
KOUTIRI, I.
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccCOSTE, FREDERIC
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
441569 Centre National de la Recherche Scientifique [CNRS]
FABBRO, Rémy
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
CHARPENTIER, C.
575107 Air Liquide Santé International [Jouy-en-Josas, France] [Campus Innovation Paris]
LEFEBVRE, P.
575107 Air Liquide Santé International [Jouy-en-Josas, France] [Campus Innovation Paris]
ccPEYRE, Patrice
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/19218
DOI
10.1016/j.jmatprotec.2020.116851
Date
2021
Journal
Journal of Materials Processing Technology

Abstract

The gaseous atmosphere plays a major role in the quality of the manufactured parts in Laser Powder Bed Fusion (L-PBF) by protecting the metal from high temperature oxidation. If argon and nitrogen are the most commonly used gases, helium has almost never been considered as a possible candidate as a chemically inert shielding gas. To provide a better understanding of the influence of the gas atmosphere on the process stability, a comparative study of L-PBF manufacturing under argon and helium atmospheres has been carried out, considering a nickel-based alloy Inconel® 625 and a single bead configuration. To this end, in-situ process measurements were carried out on a dedicated experimental setup. The melt pool behaviour, the expansion of the vapour plume and the amount of spatters were evaluated with high-speed imaging for the two gases considered, together with the final L-PBF bead dimensions. Results were also compared to single fusion beads carried out in an industrial L-PBF machine for a comparable range of volume energy densities. The influence of the shielding atmosphere on L-PBF single beads was as follows: (1) dimensions of beads were shown to be constant whatever the gas; (2) fewer and smaller spatters were produced under helium atmosphere, especially for high volume energy densities. Physical mechanisms were then discussed to understand those specific effects.

Files in this item

Name:
PIMM_ JMPT_2020_TRAORE.pdf
Size:
21.02Mb
Format:
PDF
Description:
Article
View/Open

Collections

  • Laboratoire Procédés et Ingénierie en Mécanique et Matériaux (PIMM)

Related items

Showing items related by title, author, creator and subject.

  • Experimental analysis of spatter generation and melt-pool behavior during the powder bed laser beam melting process 
    Article dans une revue sans comité de lecture
    GUNENTHIRAM, V; ccPEYRE, Patrice; SCHNEIDER, MATTHIEU; DAL, Morgan; COSTE, Frédéric; KOUTIRI, Imade; FABBRO, Rémy (Elsevier, 2018)
    The experimental analysis of spatter formation was carried out on an instrumented SLM set-up allowing the quantification of spatter ejections and possible correlation with melt-pool behavior. Considering nearly similar SLM ...
  • Influence of gaseous environment on the properties of Inconel 625 L-PBF parts 
    Article dans une revue avec comité de lecture
    ccTRAORE, Socona; ccKOUTIRI, Imade; ccSCHNEIDER, Matthieu; RODRIGUES, Julien; ccDUPUY, Corinne; LEFEBVRE, P.; COSTE, Frédéric; ccPEYRE, Patrice (Elsevier BV, 2022-11)
    The effect of gaseous atmosphere during Laser Powder Bed Fusion (L-PBF) was analysed on an Inconel 625 alloy. The bead dimensions, the surface finish, the porosity rate and the resulting microstructure were analysed for ...
  • Analysis of laser–melt pool–powder bed interaction during the selective laser melting of a stainless steel 
    Article dans une revue avec comité de lecture
    GUNENTHIRAM, Valérie; PEYRE, Patrice; SCHNEIDER, Matthieu; DAL, Morgan; COSTE, Frédéric; FABBRO, Rémy (Laser Institute of America, 2017)
    The laser powder bed fusion (LPBF) or powder-bed additive layer manufacturing process is now recognized as a high-potential manufacturing process for complex metallic parts. However, many technical issues are still to ...
  • Analysis and possible estimation of keyhole depths evolution, using laser operating parameters and material properties 
    Article dans une revue avec comité de lecture
    FABBRO, Rémy; DAL, Morgan; PEYRE, Patrice; COSTE, Frédéric; SCHNEIDER, Matthieu; GUNENTHIRAM, V (Laser Institute of America, 2018)
    The authors propose an analysis of the effect of various operating parameters on the keyhole depth during laser welding. The authors have developed a model that uses the analysis of the thermal field obtained in 2D geometry, ...
  • Influence of beam diameter on Laser Powder Bed Fusion (L-PBF) process 
    Article dans une revue avec comité de lecture
    SOW, M.C.; DE TERRIS, Thibaut; CASTELNAU, Olivier; HADJEM-HAMOUCHE, Zehoua; COSTE, Frédéric; FABBRO, Rémy; PEYRE, Patrice (Elsevier, 2020)
    The use of large beams in the Laser Powder Bed Fusion (L-PBF) process has been receiving increasing attention for the past few years and may widen the dissemination of this technology in the industry, as well as help ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales