Additively manufactured AlSi10Mg aluminium powder coils and their electrical properties

This article presents the results of experimental studies on the electrical characteristics of additively manufactured aluminum powder coils made from AlSi10Mg. Measurements were taken before annealing, after annealing, and after repeated annealing. It was found that before annealing, the electrical properties of AlSi10Mg coils were significantly worse than expected. However, after annealing the coils, their actual resistance, resistivity, and electrical conductivity approached 76.2% of those of pure aluminum. Repeated annealing also confirmed the stability of these properties after the initial process. After re-annealing, the properties changed by 0.39%, bringing them even closer to those of pure aluminum at 76.5%. These results open up opportunities for further research into the additive manufacturing of windings for electric machines using selective laser melting techniques.