{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["10(1)"],"submitter":["Kenel C"],"pubmed_abstract":["Additive manufacturing of high-entropy alloys combines the mechanical properties of this novel family of alloys with the geometrical freedom and complexity required by modern designs. Here, a non-beam approach to additive manufacturing of high-entropy alloys is developed based on 3D extrusion of inks containing a blend of oxide nanopowders (Co<sub>3</sub>O<sub>4</sub> + Cr<sub>2</sub>O<sub>3</sub> + Fe<sub>2</sub>O<sub>3</sub> + NiO), followed by co-reduction to metals, inter-diffusion and sintering to near-full density CoCrFeNi in H<sub>2</sub>. A complex phase evolution path is observed by in-situ X-ray diffraction in extruded filaments when the oxide phases undergo reduction and the resulting metals inter-diffuse, ultimately forming face-centered-cubic equiatomic CoCrFeNi alloy. Linked to the phase evolution is a complex structural evolution, from loosely packed oxide particles in the green body to fully-annealed, metallic CoCrFeNi with 99.6 ± 0.1% relative density. CoCrFeNi micro-lattices are created with strut diameters as low as 100 μm and excellent mechanical properties at ambient and cryogenic temperatures."],"journal":["Nature communications"],"pagination":["904"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6385271"],"repository":["biostudies-literature"],"pubmed_title":["3D ink-extrusion additive manufacturing of CoCrFeNi high-entropy alloy micro-lattices."],"pmcid":["PMC6385271"],"pubmed_authors":["Dunand DC","Kenel C","Casati NPM"],"additional_accession":[]},"is_claimable":false,"name":"3D ink-extrusion additive manufacturing of CoCrFeNi high-entropy alloy micro-lattices.","description":"Additive manufacturing of high-entropy alloys combines the mechanical properties of this novel family of alloys with the geometrical freedom and complexity required by modern designs. Here, a non-beam approach to additive manufacturing of high-entropy alloys is developed based on 3D extrusion of inks containing a blend of oxide nanopowders (Co<sub>3</sub>O<sub>4</sub> + Cr<sub>2</sub>O<sub>3</sub> + Fe<sub>2</sub>O<sub>3</sub> + NiO), followed by co-reduction to metals, inter-diffusion and sintering to near-full density CoCrFeNi in H<sub>2</sub>. A complex phase evolution path is observed by in-situ X-ray diffraction in extruded filaments when the oxide phases undergo reduction and the resulting metals inter-diffuse, ultimately forming face-centered-cubic equiatomic CoCrFeNi alloy. Linked to the phase evolution is a complex structural evolution, from loosely packed oxide particles in the green body to fully-annealed, metallic CoCrFeNi with 99.6 ± 0.1% relative density. CoCrFeNi micro-lattices are created with strut diameters as low as 100 μm and excellent mechanical properties at ambient and cryogenic temperatures.","dates":{"release":"2019-01-01T00:00:00Z","publication":"2019 Feb","modification":"2025-04-19T14:34:00.535Z","creation":"2019-08-04T07:37:10Z"},"accession":"S-EPMC6385271","cross_references":{"pubmed":["30796218"],"doi":["10.1038/s41467-019-08763-4"]}}