Effects of Selective Laser Melting additive manufacturing parameters of Inconel 718 on porosity, microstructure and mechanical properties

K. Moussaoui 1 Walter Rubio 1 Michel Mousseigne 1 T. Sultan 2 Farhad Rezai-Aria 1
1 ICA - Institut Clément Ader
2 Prismadd
Abstract : The effect of SLM parameters on porosity, microstructure and mechanical properties is studied. To this purpose, the Selective Laser Melting (SLM) technology is applied to manufacture Inconel 718 specimens. The material, the manufacturing process, the Hot Isostatic Pressure (HIP), heat treatment, observation procedures and characterisation of mechanical properties are presented. A columnar-dendritic microstructure was observed on all the SLM specimens and a Volumetric Energy Density (VED) effect on the latter was also noted. The rate of porosity varies in relation to the VED and is considerably reduced after HIP. The heat treatment erases the dendritic microstructure, significantly enhances microhardness and confers on the alloy tensile mechanical properties comparable to forged Inconel 718.
Keywords : Inconel 718 Selective Laser Melting Porosity Mechanical properties Microstructure
Document type :
Journal articles
Complete list of metadatas

Cited literature [42 references]  Display  Hide  Download
https://hal-mines-albi.archives-ouvertes.fr/hal-01867274
Contributor : Imt Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Submitted on : Thursday, November 15, 2018 - 11:18:12 AM
Last modification on : Friday, October 11, 2019 - 8:22:59 PM
Long-term archiving on : Saturday, February 16, 2019 - 12:27:48 PM

File

effects-of-selective-laser-mel...
Files produced by the author(s)

Identifiers

Collections

MINES-ALBI | UNIV-TLSE3 | INSA-TOULOUSE | ICA-ALBI | ICA | INSA-GROUPE

Citation

K. Moussaoui, Walter Rubio, Michel Mousseigne, T. Sultan, Farhad Rezai-Aria. Effects of Selective Laser Melting additive manufacturing parameters of Inconel 718 on porosity, microstructure and mechanical properties. Materials Science and Engineering: A, Elsevier, 2018, 735, pp.182 - 190. ⟨10.1016/j.msea.2018.08.037⟩. ⟨hal-01867274⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

154

Files downloads

104

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD