Abstract
Laser powder bed fusion (PBF-LB/M) of bulk metallic glasses permits large and complex components to solidify to an amorphous state, thus expanding the processing possibilities of this material class. Here, the Cu-Ti-Zr-Ni family, also known as Vitreloy 101, is systematically investigated for processing of the PBF-LB/M powder itself. Gas atomization was used to produce powder of Vit101 and derivates micro-alloyed with Si and Sn. The influence of atomization and alloy composition on glass formation, oxygen content, particle morphology, and flowability were investigated. Amorphous powder was successfully obtained using industrial-grade purity as feedstock for the atomization. The oxygen content within the powder was controlled by the surface-to-volume ratio, without significant influence of the different atomization parameters and the microalloying itself. The powder displayed high circularity with sufficient flowability after drying. Our results contribute to the investigation of Vitreloy 101 alloys as promising candidates for PBF-LB/M applications.
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