• 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 gaseous environment on the properties of Inconel 625 L-PBF parts

Article dans une revue avec comité de lecture
Author
ccTRAORE, Socona
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccKOUTIRI, Imade
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccSCHNEIDER, Matthieu
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
RODRIGUES, Julien
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccDUPUY, Corinne
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
LEFEBVRE, P.
495014 Air Liquide [Siège Social]
COSTE, Frédéric
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
ccPEYRE, Patrice
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]

URI
http://hdl.handle.net/10985/23170
DOI
10.1016/j.jmapro.2022.11.023
Date
2022-11
Journal
Journal of Manufacturing Processes

Abstract

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 three different gases (Argon, Nitrogen and Helium) in an industrial L-PBF machine, using rather high energy density promoting keyhole welding regime. No clear effect of gas nature on energy coupling was shown when considering fusion beads on L-PBF parts. However, this work shows that gas, and especially helium mostly modifies surface finish, due to a modification of heat dissipation at the interface between the built part and the powder bed. This effect is clearly beneficial for vertical builds but is balanced by a possible and detrimental reduction of surface tensions for inclined and overhanging surfaces. The data presented here indicates a moderate benefit of He and N2 gases on porosity rates at high laser energy, but the as-built microstructures do not exhibit detectable differences, at the scale considered for the analyses (SEM + EBSD). Some physical aspects of the liquid/gas interface are discussed at the end of the paper to explain the observed results.

Files in this item

Name:
PIMM_JMP_2022_PEYRE.pdf
Size:
22.56Mb
Format:
PDF
Description:
Influence of gaseous environment ...
Embargoed until:
2023-05-18
View/Open

Collections

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

Related items

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

  • 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
    ccTRAORE, Socona; ccSCHNEIDER, Matthieu; ccKOUTIRI, Imade; ccCOSTE, FREDERIC; FABBRO, Rémy; CHARPENTIER, C.; LEFEBVRE, P.; ccPEYRE, Patrice (Elsevier, 2021)
    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 ...
  • 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; ccSCHNEIDER, Matthieu; COSTE, Frédéric; FABBRO, Rémy; ccDAL, Morgan; ccKOUTIRI, Imade (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 ...
  • Optimization and comparison of porosity rate measurement methods of Selective Laser Melted metallic parts 
    Article dans une revue avec comité de lecture
    DE TERRIS, Thibaut; ANDREAU, Olivier; PEYRE, Patrice; ADAMSKI, Frédéric; GORNY, Cyril; DUPUY, Corinne; ccKOUTIRI, Imade (Elsevier, 2019)
    The systematic occurrence of porosities inside selective laser melted (SLM) parts is a well-known phenomenon. In order to improve the density of SLM parts, it is important not only to assess the physical origin of the ...
  • Texture control of 316L parts by modulation of the melt pool morphology in selective laser melting 
    Article dans une revue avec comité de lecture
    ANDREAU, Olivier; PEYRE, Patrice; PENOT, Jean-Daniel; DE TERRIS, Thibaut; DUPUY, Corinne; BAUDIN, Thierry; ccKOUTIRI, Imade; ccPESSARD, Etienne; ccSAINTIER, Nicolas (Elsevier, 2019)
    In this study, 316L parts were fabricated with the selective laser melting additive layer manufacturing process using unidirectional laser scan to control their texture. The melt pool shape, microstructure and texture of ...
  • A competition between the contour and hatching zones on the high cycle fatigue behaviour of a 316L stainless steel: Analyzed using X-ray computed tomography 
    Article dans une revue avec comité de lecture
    ANDREAU, Olivier; ccPESSARD, Etienne; ccKOUTIRI, Imade; PENOT, Jean-Daniel; DUPUY, Corinne; ccSAINTIER, Nicolas; PEYRE, Patrice (Elsevier, 2019)
    Metal powder bed fusion techniques can be used to build parts with complex internal and external geometries.Process parameters are optimized in order to obtain parts with low surface roughness and porosity, while maintaining ...

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