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Peritectic titanium alloys for 3D printing

Barriobero-Vila, Pere and Gussone, Joachim and Stark, Andreas and Schell, Norbert and Haubrich, Jan and Requena, Guillermo (2018) Peritectic titanium alloys for 3D printing. Nature Communications, 9 (3426). Nature Publishing Group. DOI: 10.1038/s41467-018-05819-9 ISSN 2041-1723

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Official URL: http://www.nature.com/articles/s41467-018-05819-9


Metal-based additive manufacturing (AM) permits layer-by-layer fabrication of near net-shaped metallic components with complex geometries not achievable using the design constraints of traditional manufacturing. Production savings of titanium-based components by AM are estimated up to 50% owing to the current exorbitant loss of material during machining. Nowadays, most of the titanium alloys for AM are based on conventional compositions still tailored to conventional manufacturing not considering the directional thermal gradient that provokes epitaxial growth during AM. This results in severely textured microstructures associated with anisotropic structural properties usually remaining upon post-AM processing. The present investigations reveal a promising solidification and cooling path for α formation not yet exploited, in which α does not inherit the usual crystallographic orientation relationship with the parent β phase. The associated decrease in anisotropy, accompanied by the formation of equiaxed microstructures represents a step forward toward a next generation of titanium alloys for AM.

Item URL in elib:https://elib.dlr.de/121479/
Document Type:Article
Title:Peritectic titanium alloys for 3D printing
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Barriobero-Vila, Perepere.barrioberovila (at) dlr.deUNSPECIFIED
Gussone, Joachimjoachim.gussone (at) dlr.deUNSPECIFIED
Stark, AndreasHZG, GeesthachtUNSPECIFIED
Schell, NorbertHZG, GeesthachtUNSPECIFIED
Haubrich, JanJan.Haubrich (at) dlr.deUNSPECIFIED
Requena, GuillermoGuillermo.Requena (at) dlr.deUNSPECIFIED
Date:24 August 2018
Journal or Publication Title:Nature Communications
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
DOI :10.1038/s41467-018-05819-9
Publisher:Nature Publishing Group
Keywords:additive manufacturing, alloy design, titanium alloys, phase transformation kinetics
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research
Deposited By: Barriobero Vila, Pere
Deposited On:10 Sep 2018 10:02
Last Modified:10 Sep 2018 10:02

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