On the potential of eddy current characterization of the ferritic content of recovered 316L powders after LaserPowder bed fusion fabrication

Autor: R. Saddoud, K. Perlin, N. Sergeeva-Chollet, T. Delacroix, A. Skarlatos, J.P. Garandet
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Additive Manufacturing Letters, Vol 9, Iss , Pp 100207- (2024)
Druh dokumentu: article
ISSN: 2772-3690
DOI: 10.1016/j.addlet.2024.100207
Popis: An original container was designed to measure the ferritic content of powder batches by the Eddy Current (EC) technique. As opposed to the standard X-Ray Diffraction (XRD) or Electronic BackScatter Diffraction (EBSD) methods, the EC measurements can be implemented on powder batches of significant sizes, say a hundred grams or so. Using a methodology based on the multiple recycling of an initially ferrite-free virgin powder, it was shown that the EC signals are sensitive to the ferritic content of the recovered powder. On the other hand, in the frequency range scanned by the sensor, the EC signals are virtually independent on the oxygen concentration within the tested powder.
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