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dc.contributor.authorZanni, Mattia
dc.contributor.authorBerto, Filippo
dc.contributor.authorVullum, Per Erik
dc.contributor.authorTonelli, Lavinia
dc.contributor.authorMorri, Alessandro
dc.contributor.authorCeschini, Lorella
dc.date.accessioned2024-05-27T11:14:52Z
dc.date.available2024-05-27T11:14:52Z
dc.date.created2023-05-15T14:47:53Z
dc.date.issued2023
dc.identifier.citationFatigue & Fracture of Engineering Materials & Structures (FFEMS). 2023, 46 (7), 2681-2696.en_US
dc.identifier.issn8756-758X
dc.identifier.urihttps://hdl.handle.net/11250/3131520
dc.description.abstractMicrostructure and tensile properties of a hot work tool steel manufactured via laser powder bed fusion (LPBF) were investigated. Specimens were built under two different orientations and subjected to two quenching and tempering heat treatments, featuring different austenitizing and tempering temperatures and the eventual presence of a sub-zero step. Microstructural analyses revealed a homogeneous tempered martensite structure after both heat treatments, with the only distinction of a higher alloying segregation at a sub micrometric scale length in samples subjected to the highest tempering temperatures. Hardness and tensile tests indicated a negligible effect of building orientation on mechanical properties, but a significant influence of heat treatment parameters. The treatment featuring the lower tempering temperatures and the sub-zero step resulted in higher hardness, tensile strength, and elongation, attributed to a lower martensite tempering and alloying segregation. Tensile fracture occurred via crack initiation and unstable propagation from large LPBF defects in all the investigated conditions.en_US
dc.description.abstractEffect of heat treatment and defects on the tensile behavior of a hot work tool steel manufactured by laser powder bed fusionen_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleEffect of heat treatment and defects on the tensile behavior of a hot work tool steel manufactured by laser powder bed fusionen_US
dc.title.alternativeEffect of heat treatment and defects on the tensile behavior of a hot work tool steel manufactured by laser powder bed fusionen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.source.pagenumber2681-2696en_US
dc.source.volume46en_US
dc.source.journalFatigue & Fracture of Engineering Materials & Structures (FFEMS)en_US
dc.source.issue7en_US
dc.identifier.doi10.1111/ffe.14025
dc.identifier.cristin2147629
dc.relation.projectNorges forskningsråd: 295864en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode2


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