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dc.contributor.authorHuang, Shengen_US
dc.contributor.authorSing, Swee Leongen_US
dc.contributor.authorde Looze, Geoffen_US
dc.contributor.authorWilson, Roberten_US
dc.contributor.authorYeong, Wai Yeeen_US
dc.identifier.citationHuang, S., Sing, S. L., de Looze, G., Wilson, R., & Yeong, W. Y. (2020). Laser powder bed fusion of titanium-tantalum alloys : compositions and designs for biomedical applications. Journal of the Mechanical Behavior of Biomedical Materials, 108, 103775-. doi:10.1016/j.jmbbm.2020.103775en_US
dc.description.abstractIn this study, laser powder bed fusion (L-PBF), also known as selective laser melting (SLM), was used to fabricate samples of titanium-tantalum (TiTa) alloys with 0, 10, 30 and 50 wt% of tantalum using in-situ alloying. As-fabricated samples comprised of randomly-dispersed pure tantalum particles in a titanium-tantalum matrix. Porosity and unmelted tantalum particles of the samples were revealed using an optical microscope (OM). The microstructure of the alloys were determined by combination of field emission scanning electron microscopy (FE-SEM), electron back scatter diffraction (EBSD) and X-ray diffraction (XRD). The mechanical properties of the alloys were investigated with tensile and Vickers hardness tests. To ascertain the suitability of these alloys as biomaterials, Ti50Ta scaffolds with 60% porosity were characterized biologically. This study further shows that porous TiTa scaffolds fabricated using L-PBF are biocompatible with comparable biological results and manufacturability as Ti6Al4V and commercially pure titanium, based on the results obtained from cell culture with human osteosarcoma cell line SAOS-2.en_US
dc.description.sponsorshipNational Research Foundation (NRF)en_US
dc.relation.ispartofJournal of the Mechanical Behavior of Biomedical Materialsen_US
dc.rights© 2020 Elsevier Ltd. All rights reserved. This paper was published in Journal of the Mechanical Behavior of Biomedical Materials and is made available with permission of Elsevier Ltd.en_US
dc.titleLaser powder bed fusion of titanium-tantalum alloys : compositions and designs for biomedical applicationsen_US
dc.typeJournal Articleen
dc.contributor.schoolSchool of Mechanical and Aerospace Engineeringen_US
dc.contributor.researchSingapore Centre for 3D Printingen_US
dc.description.versionAccepted versionen_US
dc.subject.keywordsAdditive Manufacturingen_US
dc.subject.keywordsPowder Bed Fusionen_US
dc.description.acknowledgementThis research is supported by the National Research Foundation, Prime Minister’s Office, Singapore under its Medium-Sized Centre funding scheme and the NTU-CSIRO Seed Fund.en_US
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