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Elastoplastic response of as-built SLM and wrought Ti-6Al-4V under symmetric and asymmetric strain-controlled cyclic loading

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dc.contributor.author Agius, Dylan J.
dc.contributor.author Kourousis, Kyriakos I.
dc.contributor.author Wallbrink, Chris
dc.date.accessioned 2021-11-11T15:32:08Z
dc.date.available 2021-11-11T15:32:08Z
dc.date.issued 2018
dc.identifier.citation Agius, D;Kourousis, KI;Wallbrink, C (2018) 'Elastoplastic response of as-built SLM and wrought Ti-6Al-4V under symmetric and asymmetric strain-controlled cyclic loading'. Rapid Prototyping Journal, 24 :1409-1420. en_US
dc.identifier.issn 1355-2546
dc.identifier.uri http://hdl.handle.net/10344/10776
dc.description peer-reviewed en_US
dc.description.abstract Purpose The purpose of this paper is to examine the mechanical behaviour of additively manufactured Ti-6Al-4V under cyclic loading. Using as-built selective laser melting (SLM) Ti-6Al-4V in engineering applications requires a detailed understanding of its elastoplastic behaviour. This preliminary study intends to create a better understanding on the cyclic plasticity phenomena exhibited by this material under symmetric and asymmetric strain-controlled cyclic loading.Design/methodology/approach This paper investigates experimentally the cyclic elastoplastic behaviour of as-built SLM Ti-6Al-4V under symmetric and asymmetric strain-controlled loading histories and compares it to that of wrought Ti-6Al-4V. Moreover, a plasticity model has been customised to simulate effectively the mechanical behaviour of the as-built SLM Ti-6Al-4V. This model is formulated to account for the SLM Ti-6Al-4V-specific characteristics, under the strain-controlled experiments.Findings The elastoplastic behaviour of the as-built SLM Ti-6Al-4V has been compared to that of the wrought material, enabling characterisation of the cyclic transient phenomena under symmetric and asymmetric strain-controlled loadings. The test results have identified a difference in the strain-controlled cyclic phenomena in the as-build SLM Ti-6Al-4V when compared to its wrought counterpart, because of a difference in their microstructure. The plasticity model offers accurate simulation of the observed experimental behaviour in the SLM material.Research limitations/implications Further investigation through a more extensive test campaign involving a wider set of strain-controlled loading cases, including multiaxial (biaxial) histories, is required for a more complete characterisation of the material performance.Originality/value The present investigation offers an advancement in the knowledge of cyclic transient effects exhibited by a typical ' martensite SLM Ti-6Al-4V under symmetric and asymmetric strain-controlled tests. The research data and findings reported are among the very few reported so far in the literature. en_US
dc.language.iso eng en_US
dc.publisher Emerald Publishing Ltd en_US
dc.relation.ispartofseries Rapid Prototyping Journal;24 (9), pp 1409-1420
dc.rights This article is (c) Emerald Group Publishing and permission has been granted for this version to appear here http://ulir.ul.ie. Emerald does not grant permission for this article to be further copied/distributed or hosted elsewhere without the express permission from Emerald Group Publishing Limited en_US
dc.subject plasticity en_US
dc.subject cyclic loading en_US
dc.subject mean stress relaxation en_US
dc.subject titanium alloys
dc.title Elastoplastic response of as-built SLM and wrought Ti-6Al-4V under symmetric and asymmetric strain-controlled cyclic loading en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.date.updated 2020-01-27T15:16:42Z
dc.description.version ACCEPTED
dc.identifier.doi 10.1108/RPJ-05-2017-0105
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US
dc.internal.rssid 2868123
dc.internal.copyrightchecked No
dc.identifier.journaltitle Rapid Prototyping Journal
dc.description.status peer-reviewed


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