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

K. Moussaoui, W. Rubio

2018frselective laser meltinginconel 718porositymicrostructuremechanical properties

Abstract

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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.

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Cite This Work

@article{fb965472-ef12-4b89-8899-845ff647e961,
  title={Effects of Selective Laser Melting additive manufacturing parameters of Inconel 718 on porosity, microstructure and mechanical properties},
  author={K. Moussaoui and W. Rubio},
  year={2018},
  language={fr}
}
TY  - JOUR
TI  - Effects of Selective Laser Melting additive manufacturing parameters of Inconel 718 on porosity, microstructure and mechanical properties
AU  - K. Moussaoui
AU  - W. Rubio
PY  - 2018
LA  - fr
ER  -

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