Comparative analysis of machinability and microstructure in LPBF and conventionally processed M300 maraging steel

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dc.contributor.authorKolomý, Štěpáncs
dc.contributor.authorSlaný, Martincs
dc.contributor.authorDoubrava, Marekcs
dc.contributor.authorSedlák, Josefcs
dc.contributor.authorZouhar, Jancs
dc.contributor.authorŘehořek, Lukášcs
dc.coverage.issueOctobercs
dc.coverage.volume15cs
dc.date.accessioned2025-11-20T14:49:27Z
dc.date.available2025-11-20T14:49:27Z
dc.date.issued2025-12-01cs
dc.description.abstractThe heat treatment and machining can be considered as necessary post process operations to create functional components manufactured by means of laser powder bed fusion. Therefore, complex investigation of influence of microstructure on the machinability of maraging steel (MS) M300 parts produced by laser powder bed fusion (LPBF) and rolling was performed. The main evaluation was carried out in regard to hardness, milling forces, surface morphology, surface roughness, chip formation, and subsurface hardness and microstructure. The findings revealed that LPBF MS M300 after direct aging heat treatment, containing martensite with dispersed precipitates and reversed austenite, generated highest milling forces. Surface roughness of this material showed a lower surface roughness in comparison to as-built sample Due to the higher hardness, which caused a lower lateral plastic flow and most severe tool wear. The subsurface hardness under the milled area of direct aged samples increased by 24% (900 HV) in comparison to the bulk value, while in case of conventionally manufactured rolled sample the increase was only by 9%. More pronounced increase in subsurface hardness was measured on samples milled utilizing highest cutting speed (60 m.min-1). Furthermore, milling induced strain hardening affecting the subsurface area up to approximately 40 m in depth.en
dc.description.abstractThe heat treatment and machining can be considered as necessary post process operations to create functional components manufactured by means of laser powder bed fusion. Therefore, complex investigation of influence of microstructure on the machinability of maraging steel (MS) M300 parts produced by laser powder bed fusion (LPBF) and rolling was performed. The main evaluation was carried out in regard to hardness, milling forces, surface morphology, surface roughness, chip formation, and subsurface hardness and microstructure. The findings revealed that LPBF MS M300 after direct aging heat treatment, containing martensite with dispersed precipitates and reversed austenite, generated highest milling forces. Surface roughness of this material showed a lower surface roughness in comparison to as-built sample Due to the higher hardness, which caused a lower lateral plastic flow and most severe tool wear. The subsurface hardness under the milled area of direct aged samples increased by 24% (900 HV) in comparison to the bulk value, while in case of conventionally manufactured rolled sample the increase was only by 9%. More pronounced increase in subsurface hardness was measured on samples milled utilizing highest cutting speed (60 m.min-1). Furthermore, milling induced strain hardening affecting the subsurface area up to approximately 40 m in depth.en
dc.formattextcs
dc.format.extent1-21cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationScientific Reports. 2025, vol. 15, issue October, p. 1-21.en
dc.identifier.doi10.1038/s41598-025-19719-8cs
dc.identifier.issn2045-2322cs
dc.identifier.orcid0000-0003-3781-692Xcs
dc.identifier.orcid0000-0002-9162-0066cs
dc.identifier.orcid0000-0002-3391-8251cs
dc.identifier.orcid0000-0002-9819-8259cs
dc.identifier.orcid0000-0001-8031-8366cs
dc.identifier.orcid0000-0002-7026-7216cs
dc.identifier.other199459cs
dc.identifier.researcheridABG-6911-2020cs
dc.identifier.researcheridE-3732-2018cs
dc.identifier.researcheridC-4924-2015cs
dc.identifier.researcheridF-2670-2017cs
dc.identifier.scopus56584112000cs
dc.identifier.scopus37041666300cs
dc.identifier.scopus36939223500cs
dc.identifier.scopus23478377400cs
dc.identifier.urihttps://hdl.handle.net/11012/255631
dc.language.isoencs
dc.relation.ispartofScientific Reportscs
dc.relation.urihttps://www.nature.com/articles/s41598-025-19719-8cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2045-2322/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectHeat treatmenten
dc.subjectLaser powder bed fusionen
dc.subjectMachinabilityen
dc.subjectMaraging steel M300en
dc.subjectMicrostructureen
dc.subjectPost-processingen
dc.subjectHeat treatment
dc.subjectLaser powder bed fusion
dc.subjectMachinability
dc.subjectMaraging steel M300
dc.subjectMicrostructure
dc.subjectPost-processing
dc.titleComparative analysis of machinability and microstructure in LPBF and conventionally processed M300 maraging steelen
dc.title.alternativeComparative analysis of machinability and microstructure in LPBF and conventionally processed M300 maraging steelen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-199459en
sync.item.dbtypeVAVen
sync.item.insts2025.11.20 15:49:27en
sync.item.modts2025.11.20 11:32:23en
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
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