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

• Published in: Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2023-02, Vol.54 (2), p.658-670
• Main Authors: Małachowska, A., Żrodowski, Ł., Morończyk, B., Maj, Ł., Kuś, A., Lampke, T.
• Format: Article
• Language: English
• Subjects: Alloying elements; Amorphous materials; Characterization and Evaluation of Materials; Chemistry and Materials Science; Compressive strength; Cracks; Crystallization; Ductility; Engineering; Glass; Heat; Iron; Laser beam melting; Lasers; Materials Science; Metallic glasses; Metallic Materials; Metalloids; Nanotechnology; Original Research Article; Plastic properties; Scanning; Segregations; Stress concentration; Structural Materials; Surfaces and Interfaces; Thin Films
• ISSN: 1073-5623; 1543-1940
• DOI: 10.1007/s11661-022-06913-w

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.