Influence of different alloying strategies on the mechanical behavior of tool steel produced by laser-powder bed fusion

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dc.contributor.authorChehreh, Abootorab Baqerzadeh
dc.contributor.authorStrauch, Anna
dc.contributor.authorGroßwendt, Felix
dc.contributor.authorRöttger, Arne
dc.contributor.authorFechte-Heinen, Rainer
dc.contributor.authorTheisen, Werner
dc.contributor.authorWalther, Frank
dc.date.accessioned2021-07-20T07:05:17Z
dc.date.available2021-07-20T07:05:17Z
dc.date.issued2021-06-17
dc.description.abstractAdditive manufacturing is a high-potential technique that allows the production of components with almost no limitation in complexity. However, one of the main factors that still limits the laser-based additive manufacturing is a lack of processable alloys such as carbon martensitic hardenable tool steels, which are rarely investigated due to their susceptibility to cold cracking. Therefore, this study aimed to expand the variety of steels for laser powder bed fusion (L-PBF) by investigating an alternative alloying strategy for hot work tool steel powder. In this study, a comprehensive investigation was performed on the powder and L-PBF processed specimen properties and their correlation with the existing defects. Cubical specimens were created using the following two alloying strategies by means of L-PBF: conventional pre-alloyed gas-atomized powder and a mixture of gas-atomized powder with mechanically crushed pure elements and ferroalloys. The influence of the particle parameters such as morphology were correlated to the defect density and resulting quasi-static mechanical properties. Micromechanical behavior and damage evolution of the processed specimens were investigated using in situ computed tomography. It was shown that the properties of the L-PBF processed specimens obtained from the powder mixture performs equal or better compared to the specimens produced from conventional powder.en
dc.identifier.urihttp://hdl.handle.net/2003/40335
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-22210
dc.language.isoende
dc.relation.ispartofseriesMaterials;Vol. 14. 2021, issue 12, articleId 3344
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectPowder mixingen
dc.subjectNew alloying strategies for additive manufacturingen
dc.subjectTool steelen
dc.subjectLaser-powder bed fusion (L-PBF)en
dc.subjectCompression testen
dc.subjectComputed tomographyen
dc.subject.ddc660
dc.subject.rswkRapid Prototyping <Fertigung>de
dc.subject.rswkLegierungde
dc.subject.rswkWerkzeugstahlde
dc.subject.rswkSelektives Laserschmelzende
dc.subject.rswkDruckversuchde
dc.subject.rswkMikrocomputertomographiede
dc.titleInfluence of different alloying strategies on the mechanical behavior of tool steel produced by laser-powder bed fusionen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationMaterials. Vol. 14. 2021, issue 12, articleId 3344de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.3390/ma14123344de

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Fachgebiet Werkstoffprüftechnik