Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments

Selective laser melting is a promising powder-bed-based additive manufacturing technique for titanium alloys: near net-shaped metallic components can be produced with high resource-efficiency and cost savings. For the most commercialized titanium alloy, namely Ti-6Al-4V, the complicated thermal prof...

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Autores: Barriobero Vila, Pere|||0000-0002-4412-3729, Gussone, Joachim, Haubrich, Jan, Sandlöbes, Stefanie, Da Silva, Julio Cesar, Cloetens, Peter, Schell, Norbert, Requena, Guillermo
Formato: artículo
Fecha de publicación:2017
País:España
Recursos:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/387369
Acesso em linha:https://hdl.handle.net/2117/387369
https://dx.doi.org/10.3390/ma10030268
Access Level:acceso abierto
Palavra-chave:Titanium alloys
Additive manufacturing
Metals
Selective laser melting
Intrinsic heat treatment
Metastable phases
Phase transformations
Martensite decomposition
Element partitioning
High energy synchrotron X-ray diffraction
Synchrotron holographic X-ray computed tomography
Titani -- Aliatges
Fabricació additiva
Metalls
Àrees temàtiques de la UPC::Enginyeria mecànica
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spelling Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatmentsBarriobero Vila, Pere|||0000-0002-4412-3729Gussone, JoachimGussone, JoachimHaubrich, JanSandlöbes, StefanieDa Silva, Julio CesarCloetens, PeterSchell, NorbertRequena, GuillermoTitanium alloysAdditive manufacturingMetalsAdditive manufacturingSelective laser meltingIntrinsic heat treatmentTitanium alloysMetastable phasesPhase transformationsMartensite decompositionElement partitioningHigh energy synchrotron X-ray diffractionSynchrotron holographic X-ray computed tomographyTitani -- AliatgesFabricació additivaMetallsÀrees temàtiques de la UPC::Enginyeria mecànicaSelective laser melting is a promising powder-bed-based additive manufacturing technique for titanium alloys: near net-shaped metallic components can be produced with high resource-efficiency and cost savings. For the most commercialized titanium alloy, namely Ti-6Al-4V, the complicated thermal profile of selective laser melting manufacturing (sharp cycles of steep heating and cooling rates) usually hinders manufacturing of components in a one-step process owing to the formation of brittle martensitic microstructures unsuitable for structural applications. In this work, an intensified intrinsic heat treatment is applied during selective laser melting of Ti-6Al-4V powder using a scanning strategy that combines porosity-optimized processing with a very tight hatch distance. Extensive martensite decomposition providing a uniform, fine lamellar a + ß microstructure is obtained along the building direction. Moreover, structural evidence of the formation of the intermetallic a2-Ti3Al phase is provided. Variations in the lattice parameter of ß serve as an indicator of the microstructural degree of stabilization. Interconnected 3D networks of ß are generated in regions highly affected by the intensified intrinsic heat treatment applied. The results obtained reflect a contribution towards simultaneous selective laser melting-manufacturing and heat treatment for fabrication of Ti-6Al-4V parts.Peer ReviewedMultidisciplinary Digital Publishing Institute (MDPI)20172017-03-0720232023-05-12journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/387369https://dx.doi.org/10.3390/ma10030268reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/3873692026-05-27T15:37:01Z
dc.title.none.fl_str_mv Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
title Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
spellingShingle Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
Barriobero Vila, Pere|||0000-0002-4412-3729
Titanium alloys
Additive manufacturing
Metals
Additive manufacturing
Selective laser melting
Intrinsic heat treatment
Titanium alloys
Metastable phases
Phase transformations
Martensite decomposition
Element partitioning
High energy synchrotron X-ray diffraction
Synchrotron holographic X-ray computed tomography
Titani -- Aliatges
Fabricació additiva
Metalls
Àrees temàtiques de la UPC::Enginyeria mecànica
title_short Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
title_full Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
title_fullStr Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
title_full_unstemmed Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
title_sort Inducing stable a + ß microstructures during selective laser melting of Ti-6Al-4V using intensified intrinsic heat treatments
dc.creator.none.fl_str_mv Barriobero Vila, Pere|||0000-0002-4412-3729
Gussone, Joachim
Gussone, Joachim
Haubrich, Jan
Sandlöbes, Stefanie
Da Silva, Julio Cesar
Cloetens, Peter
Schell, Norbert
Requena, Guillermo
author Barriobero Vila, Pere|||0000-0002-4412-3729
author_facet Barriobero Vila, Pere|||0000-0002-4412-3729
Gussone, Joachim
Haubrich, Jan
Sandlöbes, Stefanie
Da Silva, Julio Cesar
Cloetens, Peter
Schell, Norbert
Requena, Guillermo
author_role author
author2 Gussone, Joachim
Haubrich, Jan
Sandlöbes, Stefanie
Da Silva, Julio Cesar
Cloetens, Peter
Schell, Norbert
Requena, Guillermo
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Titanium alloys
Additive manufacturing
Metals
Additive manufacturing
Selective laser melting
Intrinsic heat treatment
Titanium alloys
Metastable phases
Phase transformations
Martensite decomposition
Element partitioning
High energy synchrotron X-ray diffraction
Synchrotron holographic X-ray computed tomography
Titani -- Aliatges
Fabricació additiva
Metalls
Àrees temàtiques de la UPC::Enginyeria mecànica
topic Titanium alloys
Additive manufacturing
Metals
Additive manufacturing
Selective laser melting
Intrinsic heat treatment
Titanium alloys
Metastable phases
Phase transformations
Martensite decomposition
Element partitioning
High energy synchrotron X-ray diffraction
Synchrotron holographic X-ray computed tomography
Titani -- Aliatges
Fabricació additiva
Metalls
Àrees temàtiques de la UPC::Enginyeria mecànica
description Selective laser melting is a promising powder-bed-based additive manufacturing technique for titanium alloys: near net-shaped metallic components can be produced with high resource-efficiency and cost savings. For the most commercialized titanium alloy, namely Ti-6Al-4V, the complicated thermal profile of selective laser melting manufacturing (sharp cycles of steep heating and cooling rates) usually hinders manufacturing of components in a one-step process owing to the formation of brittle martensitic microstructures unsuitable for structural applications. In this work, an intensified intrinsic heat treatment is applied during selective laser melting of Ti-6Al-4V powder using a scanning strategy that combines porosity-optimized processing with a very tight hatch distance. Extensive martensite decomposition providing a uniform, fine lamellar a + ß microstructure is obtained along the building direction. Moreover, structural evidence of the formation of the intermetallic a2-Ti3Al phase is provided. Variations in the lattice parameter of ß serve as an indicator of the microstructural degree of stabilization. Interconnected 3D networks of ß are generated in regions highly affected by the intensified intrinsic heat treatment applied. The results obtained reflect a contribution towards simultaneous selective laser melting-manufacturing and heat treatment for fabrication of Ti-6Al-4V parts.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-03-07
2023
2023-05-12
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/387369
https://dx.doi.org/10.3390/ma10030268
url https://hdl.handle.net/2117/387369
https://dx.doi.org/10.3390/ma10030268
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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