Effect of IN718 Recycled Powder Reuse on Properties of Parts Manufactured by Means of Selective Laser Melting

By L. Ardila, F. Garciandía, J. González-Díaz, P. Álvarez, A. Echeverría, M. Petite, R. Deffley, J. Ochoa. 2014

269 citations recorded by the source corpus.

Abstract Powder quality control is essential to obtain parts with suitable mechanical properties in Selective Laser Melting manufacturing technique. One of the most important advantages of suchtechnique is that it allows an efficient use of the material, due to the possibility to recycle and reuse un-melted powder. Nevertheless, powder material properties may change due to repeated recycling, affecting this way the mechanicalbehavior of parts. In this paper the effect of powder reuse on its quality and on the mechanical properties of the resulting melted parts is studied via self-developed recycling methodology. The material considered for investigation was IN718, a nickel superalloy widely used in industry. After recycling powder up to 14 times, no significant changes were observed in powder and test parts properties. The results obtained in this work will help to validate powder recycling methodology for its use in current industrial Selective Laser Melting manufacturing.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/a8780088ba628d25700da9353cd2d251a1bfd5bc

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Citations in the corpus

Additive Manufacturing Processes: Selective Laser Melting, Electron Beam Melting and Binder Jetting—Selection Guidelines (2017, background): “Studies have shown that the powders can theoretically be reused repeatedly [71].”
3D printing of Aluminium alloys: Additive Manufacturing of Aluminium alloys using selective laser melting (2019, background): “A more realistic material efficiency of 95% has been reported [223].”
Process defects and in situ monitoring methods in metal powder bed fusion: a review (2017, unknown): “(2012), Hann (2016) and Ardila et al .”
An overview of powder granulometry on feedstock and part performance in the selective laser melting process (2017, methodology): “By comparing the type of materials used in the mentioned studies [65,103,105], subtle changes in cooling rates which affect the microstructure could be more observable in better conductivity materials (Al alloy) as compared to other materials (Ti and Ni alloys).”