Cross-testing laser powder bed fusion production machines and powders: Variability in mechanical properties of heat-treated 316L stainless steel

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorReijonen, Jonien_US
dc.contributor.authorBjörkstrand, Royen_US
dc.contributor.authorRiipinen, Tuomasen_US
dc.contributor.authorQue, Zaiqingen_US
dc.contributor.authorMetsä-Kortelainen, Sinien_US
dc.contributor.authorSalmi, Mikaen_US
dc.contributor.departmentDepartment of Mechanical Engineeringen
dc.contributor.groupauthorAdvanced Manufacturing and Materialsen
dc.contributor.organizationVTT Technical Research Centre of Finlanden_US
dc.date.accessioned2021-04-20T06:47:02Z
dc.date.available2021-04-20T06:47:02Z
dc.date.issued2021-06en_US
dc.description.abstractLaser powder bed fusion additive manufacturing is used for demanding applications in industries such as aerospace. However, machine-specific, optimized process conditions and parameters are required to assure consistent part quality. In addition, differences in supplied powder can cause variation in the mechanical properties of the final parts. In this paper, the variability in mechanical properties of 316L stainless steel produced with two different laser powder bed fusion machines from two different powder batches was studied by producing an identical set of tensile and impact toughness test specimens. The samples were subjected to stress-relieving, solution annealing and hot isostatic pressing to assess the effectiveness of standardized heat-treatments in reducing variation in the mechanical properties of the built parts. Porosity, microstructure, tensile properties, and impact toughness of the specimens were measured to study the effect of changing the material, machine, and heat treatment. The maximum differences observed between the studied machine-powder combinations were approximately 7% for tensile properties and approximately 20% for impact toughness. HIP reduced the variability in all other studied properties except elongation. All the specimens fulfil the minimum requirements set in ASTM F3184-16 for AM 316L.en
dc.description.versionPeer revieweden
dc.format.extent13
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationReijonen, J, Björkstrand, R, Riipinen, T, Que, Z, Metsä-Kortelainen, S & Salmi, M 2021, ' Cross-testing laser powder bed fusion production machines and powders : Variability in mechanical properties of heat-treated 316L stainless steel ', Materials & design, vol. 204, 109684 . https://doi.org/10.1016/j.matdes.2021.109684en
dc.identifier.doi10.1016/j.matdes.2021.109684en_US
dc.identifier.issn0264-1275
dc.identifier.issn1873-4197
dc.identifier.otherPURE UUID: 46151228-55cb-4931-bb3d-6bd1b8aabed3en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/46151228-55cb-4931-bb3d-6bd1b8aabed3en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85103980477&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/62030211/ENG_Reijonen_et_al_Cross_testing_laser_powder_Materials_and_Design.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/106865
dc.identifier.urnURN:NBN:fi:aalto-202104206159
dc.language.isoenen
dc.publisherElsevier BV
dc.relation.ispartofseriesMaterials and Designen
dc.relation.ispartofseriesVolume 204en
dc.rightsopenAccessen
dc.subject.keywordHeat treatmenten_US
dc.subject.keywordLaser powder bed fusionen_US
dc.subject.keywordMechanical propertiesen_US
dc.subject.keywordStainless steelen_US
dc.subject.keywordVariabilityen_US
dc.titleCross-testing laser powder bed fusion production machines and powders: Variability in mechanical properties of heat-treated 316L stainless steelen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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