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June 14, 2026The International Journal of Advanced Manufacturing TechnologyOpen Access

Influence of powder recycling protocol on powder, microstructure and mechanical properties of Inconel 718 manufactured by laser powder bed fusion

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Authors

CKClément KellerCentre National de la Recherche ScientifiqueMMMorgane MokhtariLaboratoire Génie de ProductionJNJosiane NguejioCentre National de la Recherche Scientifique

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Overview

Randomized trial investigates the impact of powder recycling on Inconel 718 properties, suggesting limited effects on quality.

Key Points

  • This study aims to evaluate how recycling protocols influence the properties of Inconel 718 manufactured by laser powder bed fusion.
  • Compared two recycling protocols: with and without virgin powder addition over 54 cycles.
  • Evaluated powder characteristics, microstructures, and mechanical properties including tensile and fatigue.
  • Included precipitation heat treatment in some samples.
  • Oxygen content increased slightly, and particle circularity decreased, particularly for the protocol without virgin powder.
  • All powders remained within industrial specifications with improved flowability after recycling.
  • Tensile properties stayed unaffected, and fatigue life showed no significant degradation across protocols.

Cite This Study

Keller et al. (2026) studied this question.

synapsesocial.com/papers/6a2e4753b1cc60ccdea8bcf1https://doi.org/10.1007/s00170-026-18432-8
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