20.500.12556/RUL-166748 Bioresorbability dependence on microstructure of additivelly manufactured and conventionally produced Fe-Mn alloys Fe-Mn alloys were produced for bioresorbable applications using the laser powder bed fusion (LPBF) process with varying process parameters. The feedstock alloy powder for LPBF was derived from conventional cast/forged bars using plasma ultrasonic atomization. Additionally, a conventionally produced Fe-Mn alloy with the same composition was investigated to compare material properties. The influence of the processing route and LPBF process parameters on microstructure evolution, particularly the formation of Σ boundaries, was examined and correlated with the observed corrosion rate obtained from potentiodynamic curves in Hank’s solution. The concentration of released Fe and Mn ions after immersion tests in lactic acid was also evaluated. The initial corrosion mechanism of the LPBF alloy was elucidated through X-ray photoelectron spectroscopy (XPS). Furthermore, in vitro tests were conducted using MG-63 human osteoblast-like osteosarcoma cells to assess the biocompatibility response. The present study established a correlation between microstructure and corrosion rate, while the biocompatibility tests affirmed the suitability of additively manufactured Fe-Mn alloys for bioresorbable applications. Fe-Mn alloy laser powder bed fusion bioresorbable microstructure corrosion behaviour biocompatibility true false true Angleški jezik Ni določen Članek v reviji 2025-01-23 15:21:34 2025-01-23 15:21:38 2025-01-24 04:05:30 0000-00-00 00:00:00 2024 0 0 Str. 4881-4892 Vol. 30 2024 0000-00-00 Zaloznikova Objavljeno apc 0000-00-00 0000-00-00 0000-00-00 669.15:620.19 2238-7854 10.1016/j.jmrt.2024.04.097 193197315 1-s2.0-S2238785424008718-main.pdf 1-s2.0-S2238785424008718-main.pdf 1 07ECD3EB14EB77291A662D70FE66FBF6 b93bc9a857f9ccabf35e77695153349f9541227bf3c8018060ae80ea2e209981 de2d9991-d994-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=198595 https://www.sciencedirect.com/science/article/pii/S2238785424008718 1 91774efd-d994-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=198594 Biotehniška fakulteta 0 0 0