Selective Laser Melting of Fe-Based Metallic Glasses With Different Degree of Plasticity

Selective laser melting (SLM) is one of the promising techniques for producing metallic glass components with unlimited geometries and dimensions. In the case of iron-based metallic glasses, the appearance of cracks remains a problem. In this work, two alloys Fe 48 Mo 14 Cr 15 Y 2 C 15 B 6 and (Fe 0.9 Co 0.1 ) 76 Mo 4 (P 0.45 C 0.2 B 0.2 Si 0.15 ) 20 , differing in their plasticity, were printed with a double stage scanning strategy. Both alloys were characterized by a fully amorphous structure and a crack grid that coincided with the hatch distance in the first scan. Segregations of metalloids were observed in the vicinity of the cracks. Fe 48 Mo 14 Cr 15 Y 2 C 15 B 6 samples were characterized by a high compression strength of 1298 ± 11 MPa and zero plasticity. The compression strength of the (Fe 0.9 Co 0.1 ) 76 Mo 4 (P 0.45 C 0.2 B 0.2 Si 0.15 ) 20 samples was 142 ± 22 MPa. The results obtained suggest that further development of scanning strategies and research on the influence of alloying elements is needed.