Micromechanical aspects of the effect of temperature and local plastic strain magnitude on the fracture toughness of ferrite steels

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dc.contributor.authorKotrechko, Sergiycs
dc.contributor.authorKozák, Vladislavcs
dc.contributor.authorZatsarna, Oleksandracs
dc.contributor.authorZimina, Galinacs
dc.contributor.authorStetsenko, Nataliyacs
dc.contributor.authorDlouhý, Ivocs
dc.coverage.issue1cs
dc.coverage.volume43cs
dc.date.issued2023-01-18cs
dc.description.abstractThe paper shows that the influence of plastic strain and temperature on the rate of crack nuclei (CN) formation is a crucial factor controlling the shape of the temperature dependence of fracture toughness and its scatter limits. Within the framework of the microscopic model described, it is explained that the dependence of the incompatibility of microplastic deformation at grain boundaries or interfaces on the value of plastic strain and temperature is the reason for the effect of these factors on the rate of CN formation. The dependencies of the CN bulk density on temperature and plastic strain are given. In the latter case, a non-monotonic change in CN density is observed. The maximum intensity of CN formation is observed when the critical value of plastic strain is reached. For ferritic structural steels, this strain is about 2%. Using reactor pressure vessel steel and cast manganese steel as examples, it is shown that not taking these effects into account in the local fracture approach leads to considerable errors in the prediction of the temperature dependence of the fracture toughness and its scatter limits.en
dc.formattextcs
dc.format.extent228-233cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationProcedia Structural Integrity. 2023, vol. 43, issue 1, p. 228-233.en
dc.identifier.doi10.1016/j.prostr.2022.12.263cs
dc.identifier.issn2452-3216cs
dc.identifier.orcid0000-0002-7212-8607cs
dc.identifier.orcid0000-0002-8053-8489cs
dc.identifier.other181511cs
dc.identifier.researcheridG-9754-2014cs
dc.identifier.researcheridC-3534-2013cs
dc.identifier.scopus7005666529cs
dc.identifier.scopus7003369902cs
dc.identifier.urihttp://hdl.handle.net/11012/213733
dc.language.isoencs
dc.publisherElseviercs
dc.relation.ispartofProcedia Structural Integritycs
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S2452321622008265cs
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2452-3216/cs
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/cs
dc.subjectfracture toughnessen
dc.subjectductile-to-brittle transitionen
dc.subjectlocal approach to fractureen
dc.subjectcrack nucleien
dc.subjectmicromechanismen
dc.titleMicromechanical aspects of the effect of temperature and local plastic strain magnitude on the fracture toughness of ferrite steelsen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-181511en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:44:46en
sync.item.modts2025.01.17 15:17:25en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav matematiky a deskriptivní geometriecs
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav materiálových věd a inženýrstvícs
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