Residual Stress Distribution in Dievar Tool Steel Bars Produced by Conventional Additive Manufacturing and Rotary Swaging Processes

Simple item page
dc.contributor.authorIzák, Josefcs
dc.contributor.authorStrunz, Pavelcs
dc.contributor.authorLevytska, Olenacs
dc.contributor.authorNémeth, Gergelycs
dc.contributor.authorŠaroun, Jancs
dc.contributor.authorKocich, Radimcs
dc.contributor.authorPagáč, Marekcs
dc.contributor.authorTuharin, Kostyantyncs
dc.coverage.issue23cs
dc.coverage.volume17cs
dc.date.accessioned2025-02-03T14:49:35Z
dc.date.available2025-02-03T14:49:35Z
dc.date.issued2024-11-22cs
dc.description.abstractThe impact of manufacturing strategies on the development of residual stresses in Dievar steel is presented. Two fabrication methods were investigated: conventional ingot casting and selective laser melting as an additive manufacturing process. Subsequently, plastic deformation in the form of hot rotary swaging at 900 degrees C was applied. Residual stresses were measured using neutron diffraction. Microstructural and phase analysis, precipitate characterization, and hardness measurement-carried out to complement the investigation-showed the microstructure improvement by rotary swaging. The study reveals that the manufacturing method has a significant effect on the distribution of residual stresses in the bars. The results showed that conventional ingot casting resulted in low levels of residual stresses (up to +/- 200 MPa), with an increase in hardness after rotary swaging from 172 HV1 to 613 HV1. SLM-manufactured bars developed tensile hoop and axial residual stresses in the vicinity of the surface and large compressive axial stresses (-600 MPa) in the core due to rapid cooling. The subsequent thermomechanical treatment via rotary swaging effectively reduced both the surface tensile (to approximately +200 MPa) and the core compressive residual stresses (to -300 MPa). Moreover, it resulted in a predominantly hydrostatic stress character and a reduction in von Mises stresses, offering relatively favorable residual stress characteristics and, therefore, a reduction in the risk of material failure. In addition to the significantly improved stress profile, rotary swaging contributed to a fine grain (3-5 mu m instead of 10-15 mu m for the conventional sample) and increased the hardness of the SLM samples from 560 HV1 to 606 HV1. These insights confirm the utility of rotary swaging as a post-processing technique that not only reduces residual stresses but also improves the microstructural and mechanical properties of additively manufactured components.en
dc.formattextcs
dc.format.extent1-22cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2024, vol. 17, issue 23, p. 1-22.en
dc.identifier.doi10.3390/ma17235706cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0002-7494-1239cs
dc.identifier.other193798cs
dc.identifier.researcheridF-9223-2019cs
dc.identifier.urihttps://hdl.handle.net/11012/249982
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/17/23/5706cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectneutron diffractionen
dc.subjectDievaren
dc.subjecttool steelen
dc.subjecthot work tool steelen
dc.subjectadditive manufacturingen
dc.subjectSLMen
dc.subjectselective laser meltingen
dc.subjectrotary swagingen
dc.subjectresidual stressen
dc.titleResidual Stress Distribution in Dievar Tool Steel Bars Produced by Conventional Additive Manufacturing and Rotary Swaging Processesen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-193798en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:49:35en
sync.item.modts2025.01.17 16:41:51en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav strojírenské technologiecs
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
materials1705706.pdf
Size:
8.56 MB
Format:
Adobe Portable Document Format
Description:
file materials1705706.pdf
Download
Collections
Ústav strojírenské technologie