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DC poleHodnotaJazyk
dc.contributor.authorRubešová, Kateřina
dc.contributor.authorPeković, Michal
dc.contributor.authorJirková, Hana
dc.contributor.authorBystrianský, Martin
dc.contributor.editorKučerová, Ludmila
dc.contributor.editorJirková, Hana
dc.contributor.editorJeníček, Štěpán
dc.date.accessioned2019-10-08T11:56:35Z-
dc.date.available2019-10-08T11:56:35Z-
dc.date.issued2019
dc.identifier.citationJIRKOVÁ, Hana ed.; JENÍČEK, Štepán ed. Proceedings PING 2019: modern trends in material engineering: 10.-13.09.2019, Pilsen. 1. vyd. Plzeň: University of West Bohemia, 2019, s. 58-59. ISBN 978-80-261-0879-5.en
dc.identifier.isbn978-80-261-0879-5
dc.identifier.urihttp://hdl.handle.net/11025/35239
dc.description.sponsorshipPING 2019 is organized with the support of funds for specific university research project SVK1-2019-002.en
dc.format2 s.cs
dc.format.mimetypeapplication/PDF
dc.language.isoenen
dc.publisherUniversity of West Bohemiaen
dc.rights© University of West Bohemiaen
dc.subjectpolopevné zpracovánícs
dc.subjectprimární karbidy chrómucs
dc.subjectnástrojová ocelcs
dc.subjectzdokonalení karbidůcs
dc.titleEffects of deformation on the behaviour of chromium carbides in tool steel studied by use of semi-solid formingen
dc.typekonferenční příspěvekcs
dc.typeconferenceObjecten
dc.rights.accessopenAccessen
dc.type.versionpublishedVersionen
dc.description.abstract-translatedInduction hardening technology is mainly used for processing parts where high hardness, although conventional treatment of tool steels is ordinarily used in industrial practice, engineers continue to seek new procedures to rid tool steels of objectionable primary sharp-edged chromium carbides, which impair toughness. Fortunately, research into metal forming yielded new methods of modifying the microstructure of hypereutectoid steels. Using these methods, mechanical properties can be improved by virtue of eliminating objectionable sharp-edged carbides. These carbides resist dissolution and their size and shape make them undesirable microstructural constituents. Although they do improve wear resistance of the matrix, they also impair toughness and may act as stress concentrators. The microstructures produced by a sequence involving semi-solid processing and subsequent forming operations were different from conventional semi-solid-processed microstructures. In the former microstructures, the prior carbide network was broken up, dispersed, and became a strengthening constituent. Brittleness which plagues materials with prominent carbide networks was thus removed. The experimental material used in this study was X210Cr12 tool steel. Two semi-solid processing temperatures were used: 1240°C and 1260°C. There were two holding times: 30 minutes and 60 minutes. Another variable was the number of reductions. The resulting microstructures were examined with respect to individual sequences and reductions applied. Detailed microstructure analysis was carried out using a scanning electron microscope (SEM). Chemical compositions of carbides were determined by means of EDS (Energy Dispersive X-ray Spectroscopy). Microhardness was measured in order to gather comprehensive materials data. The purpose of the study was to identify trends, if any, in microstructural property evolution in response to the abovedescribed processing sequence.en
dc.subject.translatedsemi-solid processingen
dc.subject.translatedprimary chromium carbidesen
dc.subject.translatedtool steelen
dc.subject.translatedcarbide refinementen
dc.type.statusPeer-revieweden
Vyskytuje se v kolekcích:Proceedings PING 2019: modern trends in material engineering
Konferenční příspěvky / Conference Papers (RTI)
Proceedings PING 2019: modern trends in material engineering

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