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Innovative Densification Process of a Fe-Cr-C Powder Metallurgy Steel

dc.contributor.authorFederico Simone Gobber
dc.contributor.authorJana Bidulská
dc.contributor.authorAlessandro Fais
dc.contributor.authorRóbert Bidulský
dc.contributor.authorMarco Actis Grande
dc.contributor.otherDepartment of Applied Science and Technology (DISAT), Politecnico di Torino, Viale T. Michel 5, 15121 Alessandria, Italy
dc.contributor.otherDepartment of Plastic Deformation and Simulation Processes, Faculty of Materials, Metallurgy and Recycling, Institute of Materials and Quality Engineering, Technical University of Kosice, Vysokoskolska 4, 04200 Kosice, Slovakia
dc.contributor.otherEpos s.r.l., Via Pavia 68/72, 10098 Rivoli, Italy
dc.contributor.otherDepartment of Applied Science and Technology (DISAT), Politecnico di Torino, Viale T. Michel 5, 15121 Alessandria, Italy
dc.contributor.otherDepartment of Applied Science and Technology (DISAT), Politecnico di Torino, Viale T. Michel 5, 15121 Alessandria, Italy
dc.date.accessioned2025-10-09T05:24:06Z
dc.date.available2025-10-09T05:24:06Z
dc.date.issued01-04-2021
dc.identifier.urihttps://www.mdpi.com/2075-4701/11/4/665
dc.identifier.urihttp://digilib.fisipol.ugm.ac.id/repo/handle/15717717/40989
dc.description.abstractIn this study, the efficacy of an innovative ultra-fast sintering technique called electro-sinter-forging (ESF) was evaluated in the densification of Fe-Cr-C steel. Although ESF proved to be effective in densifying several different metallic materials and composites, it has not yet been applied to powder metallurgy Fe-Cr-C steels. Pre-alloyed Astaloy CrM powders have been ad-mixed with either graphite or graphene and then processed by ESF. By properly tuning the process parameters, final densities higher than 99% were obtained. Mechanical properties such as hardness and transverse rupture strength (TRS) were tested on samples produced by employing different process parameters and then submitted to different post-treatments (machining, heat treatment). A final transverse rupture strength up to 1340 ± 147 MPa was achieved after heat treatment, corresponding to a hardness of 852 ± 41 HV. The experimental characterization highlighted that porosity is the main factor affecting the samples’ mechanical resistance, correlating linearly with the transverse rupture strength. Conversely, it is not possible to establish a similar interdependency between hardness and mechanical resistance, since porosity has a higher effect on the final properties.
dc.language.isoEN
dc.publisherMDPI AG
dc.subject.lccMining engineering. Metallurgy
dc.titleInnovative Densification Process of a Fe-Cr-C Powder Metallurgy Steel
dc.typeArticle
dc.description.keywordspowder metallurgy
dc.description.keywordselectro sinter forging
dc.description.keywordscapacitor-discharge sintering
dc.description.keywordsFe-Cr-C
dc.description.keywordsporosity
dc.description.doi10.3390/met11040665
dc.title.journalMetals
dc.identifier.e-issn2075-4701
dc.identifier.oaioai:doaj.org/journal:05c01f663cde4f6287552355551fa1d9
dc.journal.infoVolume 11, Issue 4


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