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Functionalization of Biomedical Ti6Al4V via In Situ Alloying by Cu during Laser Powder Bed Fusion Manufacturing

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dc.contributor.author Krakhmalev, Pavel
dc.contributor.author Yadroitsev, Igor
dc.contributor.author Yadroitsava, Ina
dc.contributor.author de Smidt, Olga
dc.date.accessioned 2018-09-03T07:48:05Z
dc.date.available 2018-09-03T07:48:05Z
dc.date.issued 2017
dc.identifier.issn 1996-1944
dc.identifier.issn 1996-1944
dc.identifier.uri http://hdl.handle.net/11462/1640
dc.description Published Article en_US
dc.description.abstract The modern medical industry successfully utilizes Laser Powder Bed Fusion (LPBF) to manufacture complex custom implants. Ti6Al4V is one of the most commonly used biocompatible alloys. In surgery practice, infection at the bone–implant interface is one of the key reasons for implant failure. Therefore, advanced implants with biocompatibility and antibacterial properties are required. Modification of Ti alloy with Cu, which in small concentrations is a proven non-toxic antibacterial agent, is an attractive way to manufacture implants with embedded antibacterial functionality. The possibility of achieving alloying in situ, during manufacturing, is a unique option of the LPBF technology. It provides unique opportunities to manufacture customized implant shapes and design new alloys. Nevertheless, optimal process parameters need to be established for the in situ alloyed materials to form dense parts with required mechanical properties. This research is dedicated to an investigation of Ti6Al4V (ELI)-1 at % Cu material, manufactured by LPBF from a mixture of Ti6Al4V (ELI) and pure Cu powders. The effect of process parameters on surface roughness, chemical composition and distribution of Cu was investigated. Chemical homogeneity was discussed in relation to differences in the viscosity and density of molten Cu and Ti6Al4V. Microstructure, mechanical properties, and fracture behavior of as-built 3D samples were analyzed and discussed. Pilot antibacterial functionalization testing of Ti6Al4V (ELI) in situ alloyed with 1 at % Cu showed promising results and notable reduction in the growth of pure cultures of Escherichia coli and Staphylococcus aureus. en_US
dc.format.extent 452 217 bytes, 1 file
dc.format.mimetype Application/PDF
dc.language.iso en_US en_US
dc.publisher MDPI: Materials en_US
dc.relation.ispartofseries Volume 10;Number 1154
dc.subject Ti6Al4V-Cu alloy en_US
dc.subject in situ alloying en_US
dc.subject microstructure en_US
dc.subject chemical homogeneity en_US
dc.subject antibacterial properties en_US
dc.subject implants en_US
dc.title Functionalization of Biomedical Ti6Al4V via In Situ Alloying by Cu during Laser Powder Bed Fusion Manufacturing en_US
dc.type Article en_US

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