激光粉末床熔融制造后回收的 316L 粉末中铁素体含量的涡流表征潜力

IF 4.2 Q2 ENGINEERING, MANUFACTURING Additive manufacturing letters Pub Date : 2024-04-01 DOI:10.1016/j.addlet.2024.100207

R. Saddoud , K. Perlin , N. Sergeeva-Chollet , T. Delacroix , A. Skarlatos , J.P. Garandet

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引用次数: 0

摘要

设计了一个原始容器，用于通过涡流（EC）技术测量粉末批次中的铁素体含量。与标准的 X 射线衍射 (XRD) 或电子背散射衍射 (EBSD) 方法不同的是，EC 测量可在相当大的粉末批量（如一百克左右）上进行。使用一种基于对最初不含铁素体的原始粉末进行多次回收的方法，结果表明导电率信号对回收粉末中的铁素体含量非常敏感。另一方面，在传感器扫描的频率范围内，EC 信号几乎不受测试粉末中氧气浓度的影响。

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

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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