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Anisotropy of additively manufactured AlSi10Mg: threads and surface integrity

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Ullah, Rizwan
dc.contributor.author Akmal, Jan Sher
dc.contributor.author Laakso, Sampsa
dc.contributor.author Niemi, Esko
dc.date.accessioned 2020-04-28T07:12:19Z
dc.date.available 2020-04-28T07:12:19Z
dc.date.issued 2020-04-01
dc.identifier.citation Ullah , R , Akmal , J S , Laakso , S & Niemi , E 2020 , ' Anisotropy of additively manufactured AlSi10Mg: threads and surface integrity ' , International Journal of Advanced Manufacturing Technology , vol. 107 , no. 9-10 , pp. 3645-3662 . https://doi.org/10.1007/s00170-020-05243-8 en
dc.identifier.issn 0268-3768
dc.identifier.issn 1433-3015
dc.identifier.other PURE UUID: ebfd1cd3-2ffc-4f7c-ae09-9d7d544c143b
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/ebfd1cd3-2ffc-4f7c-ae09-9d7d544c143b
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85083897451&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/42185665/ENG_Ullah_et_al_Anisotropy_of_Additively_International_Journal_of_advanced_Manufacturing_Technology.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/43944
dc.description.abstract Implementing additive manufacturing in an industry, particularly for critical applications of lightweight aluminum (AlSi10Mg), requires part properties that are both accurate and precise to conform to the intent of a robust design. In this experimental study, the objective was to evaluate anisotropy in part properties (i.e., flatness, surface roughness, surface porosity, surface hardness, pre-hole shrinkage, drilling thrust force, and thread-stripping force) when the part orientation (i.e., print inclination and recoater angle) was independently changed. This study developed and investigated an innovative procedure for determining anisotropy in part properties. The part properties were evaluated by designing specific features on a tailor-made flat plate. The replicas of the aluminum plate were additively manufactured at varying orientations using two commercial EOS parameter sets for the laserbased powder bed fusion technique. Conventional measurement equipment was used to analyze all the part properties, except the thread-stripping force, which was measured using a custom-made setup. All the part properties indicated a considerable degree of anisotropy, excluding the drilling thrust force. The printing parameters dictate the significance of the anisotropy. The anisotropy in flatness and pre-hole shrinkage decreases with an increased substrate temperature and a decrease in energy input and thermal gradient. The presence of surface overlapping contours in the scan strategy and an increased energy input can reduce anisotropy in surface roughness and hardness. No significant anisotropy was detected when the recoater angle was changed. This study helps designers establish and substantiate design for additive manufacturing that is within the limits of appropriate anisotropy for a robust design en
dc.format.extent 18
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries International Journal of Advanced Manufacturing Technology en
dc.rights openAccess en
dc.subject.other Design en
dc.title Anisotropy of additively manufactured AlSi10Mg: threads and surface integrity en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Mechanical Engineering
dc.contributor.department Advanced Manufacturing and Materials
dc.subject.keyword 3D printing
dc.subject.keyword Direct metal laser sintering (DMLS)
dc.subject.keyword Print orientations
dc.subject.keyword Recoater angle
dc.subject.keyword Machining allowance
dc.subject.keyword Threads
dc.subject.keyword Design
dc.identifier.urn URN:NBN:fi:aalto-202004282927
dc.identifier.doi 10.1007/s00170-020-05243-8
dc.type.version publishedVersion

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