Effect of microstructure on machinability of extruded and conventional H13 tool steel

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dc.contributor.authorKolomý, Štěpáncs
dc.contributor.authorMalý, Martincs
dc.contributor.authorDoubrava, Marekcs
dc.contributor.authorSedlák, Josefcs
dc.contributor.authorZouhar, Jancs
dc.contributor.authorČupera, Jancs
dc.coverage.issueJunecs
dc.coverage.volume254cs
dc.date.accessioned2025-06-19T12:58:17Z
dc.date.available2025-06-19T12:58:17Z
dc.date.issued2025-06-09cs
dc.description.abstractH13 tool steel samples were fabricated using material extrusion to explore their machinability, offering a promising alternative to laser powder bed fusion for producing complex parts like moulds and cores. Three material states were studied: as-built (AB), heat-treated additively manufactured (HTAM), and heat-treated wrought (HTW). Machining tests focused on cutting speed, feed per tooth, and cooling conditions (dry/flood), while tracking their effect on cutting forces, surface roughness, hardness, microstructure, and residual stresses. Heat treatment significantly reduced porosity (similar to 45 % decrease between AB and HTAM) and transformed the microstructure to full martensite, increasing hardness and cutting forces. Interestingly, the HTAM sample showed lower cutting forces than HTW-by 23.7 % in dry and 24.5 % under flood cooling. HTW generally produced smoother surfaces at lower cutting parameters, but its roughness increased at higher conditions compared to HTAM. The softest AB sample experienced the highest surface hardening (similar to 12 %) when machined at low cutting speeds, while the HTW sample showed most uniform plastic deformation, extending up to similar to 50 mu m below the surface. Dominantly tensile residual stresses were measured in HTW, while AB and HTAM showed mainly compressive residual stresses under dry conditions. This study highlights viability of extruded H13 for industrial use, particularly in mould applications.en
dc.formattextcs
dc.format.extent1-21cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMATERIALS & DESIGN. 2025, vol. 254, issue June, p. 1-21.en
dc.identifier.doi10.1016/j.matdes.2025.114132cs
dc.identifier.issn1873-4197cs
dc.identifier.orcid0000-0003-3781-692Xcs
dc.identifier.orcid0000-0002-9797-8632cs
dc.identifier.orcid0000-0002-3391-8251cs
dc.identifier.orcid0000-0002-9819-8259cs
dc.identifier.orcid0000-0001-8031-8366cs
dc.identifier.orcid0000-0001-7398-9436cs
dc.identifier.other198144cs
dc.identifier.researcheridE-3732-2018cs
dc.identifier.researcheridC-4924-2015cs
dc.identifier.scopus37041666300cs
dc.identifier.scopus36939223500cs
dc.identifier.urihttps://hdl.handle.net/11012/254281
dc.language.isoencs
dc.publisherELSEVIER SCI LTDcs
dc.relation.ispartofMATERIALS & DESIGNcs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0264127525005520cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1873-4197/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectH13 tool steelen
dc.subjectMaterial extrusionen
dc.subjectHeat treatmenten
dc.subjectMachinabilityen
dc.subjectMicrostructureen
dc.subjectResidual stressesen
dc.titleEffect of microstructure on machinability of extruded and conventional H13 tool steelen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-198144en
sync.item.dbtypeVAVen
sync.item.insts2025.06.19 14:58:16en
sync.item.modts2025.06.19 14:33:15en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav strojírenské technologiecs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Smart Factory Core Facilitycs
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