In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)

Additive manufacturing has been considered a suitable process for developing high-performance parts of medical or aerospace industries. The electron beam powder bed fusion process, EB-PBF, is a powder bed fusion process carried out in a vacuum, in which the parts are melted using a highly focused el...

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Autores principales:	Julius Hendl, Sina Daubner, Axel Marquardt, Lukas Stepien, Elena Lopez, Frank Brückner, Christoph Leyens
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	additive manufacturing electron beam powder bed fusion titanium alloy process–structure–property relationship industrial computer tomography non-destructive-evaluation Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/86b338daa4994e7b8e64cdaf6daa4ea8
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spelling	oai:doaj.org-article:86b338daa4994e7b8e64cdaf6daa4ea82021-11-11T14:59:39ZIn Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)10.3390/app112198752076-3417https://doaj.org/article/86b338daa4994e7b8e64cdaf6daa4ea82021-10-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/9875https://doaj.org/toc/2076-3417Additive manufacturing has been considered a suitable process for developing high-performance parts of medical or aerospace industries. The electron beam powder bed fusion process, EB-PBF, is a powder bed fusion process carried out in a vacuum, in which the parts are melted using a highly focused electron beam. The material class of metastable β-titanium alloys, and especially Ti-5Al-5Mo-5V-3Cr, show great potential for use as small and highly complex load-bearing parts. Specimens were additively manufactured with optimised process parameters and different heat treatments used in order to create tailored mechanical properties. These heat-treated specimens were analysed with regard to their microstructure (SEM) and their mechanical strength (tensile testing). Furthermore, in situ tensile tests, using a Deben CT5000 and a YXLON ff35 industrial µ-CT, were performed and failure-critical defects were detected, analysed and monitored. Experimental results indicate that, if EB-PBF-manufactured Ti-5553 is heat-treated differently, a variety of mechanical properties are possible. Regarding their fracture mechanisms, failure-critical defects can be detected at different stages of the tensile test and defect growth behaviour can be analysed.Julius HendlSina DaubnerAxel MarquardtLukas StepienElena LopezFrank BrücknerChristoph LeyensMDPI AGarticleadditive manufacturingelectron beam powder bed fusiontitanium alloyprocess–structure–property relationshipindustrial computer tomographynon-destructive-evaluationTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 9875, p 9875 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	additive manufacturing electron beam powder bed fusion titanium alloy process–structure–property relationship industrial computer tomography non-destructive-evaluation Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	additive manufacturing electron beam powder bed fusion titanium alloy process–structure–property relationship industrial computer tomography non-destructive-evaluation Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Julius Hendl Sina Daubner Axel Marquardt Lukas Stepien Elena Lopez Frank Brückner Christoph Leyens In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
description	Additive manufacturing has been considered a suitable process for developing high-performance parts of medical or aerospace industries. The electron beam powder bed fusion process, EB-PBF, is a powder bed fusion process carried out in a vacuum, in which the parts are melted using a highly focused electron beam. The material class of metastable β-titanium alloys, and especially Ti-5Al-5Mo-5V-3Cr, show great potential for use as small and highly complex load-bearing parts. Specimens were additively manufactured with optimised process parameters and different heat treatments used in order to create tailored mechanical properties. These heat-treated specimens were analysed with regard to their microstructure (SEM) and their mechanical strength (tensile testing). Furthermore, in situ tensile tests, using a Deben CT5000 and a YXLON ff35 industrial µ-CT, were performed and failure-critical defects were detected, analysed and monitored. Experimental results indicate that, if EB-PBF-manufactured Ti-5553 is heat-treated differently, a variety of mechanical properties are possible. Regarding their fracture mechanisms, failure-critical defects can be detected at different stages of the tensile test and defect growth behaviour can be analysed.
format	article
author	Julius Hendl Sina Daubner Axel Marquardt Lukas Stepien Elena Lopez Frank Brückner Christoph Leyens
author_facet	Julius Hendl Sina Daubner Axel Marquardt Lukas Stepien Elena Lopez Frank Brückner Christoph Leyens
author_sort	Julius Hendl
title	In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
title_short	In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
title_full	In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
title_fullStr	In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
title_full_unstemmed	In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)
title_sort	in situ ct tensile testing of an additively manufactured and heat-treated metastable ß-titanium alloy (ti-5al-5mo-5v-3cr)
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/86b338daa4994e7b8e64cdaf6daa4ea8
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In Situ CT Tensile Testing of an Additively Manufactured and Heat-Treated Metastable ß-Titanium Alloy (Ti-5Al-5Mo-5V-3Cr)

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