Toughness of Two HSLA Steel Sheets

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dc.contributor.authorMagnabosco R.
dc.contributor.authorRossetto L.C.
dc.date.accessioned2019-08-20T00:17:35Z
dc.date.available2019-08-20T00:17:35Z
dc.date.issued2003
dc.description.abstractThis paper presents a study concerning the toughness anisotropic behavior of two high-strength low-alloy steel sheets having ferrite-martensite (dual-phase) and ferrite-perlite grain-refined structures. The anisotropic behavior quantification was possible through tension and Charpy impact tests. It has been concluded that mechanical resistance has higher values in the longitudinal direction for both steels, and the inverse occurs for ductility. This could be explained with the microstructure preferential orientation with rolling direction. The higher tensile strength found in dual-phase steel is related to the presence of martensite islands, and the higher yield strength found in ferrite-perlite grain-refined steel is related to the fine structure observed. The higher toughness is a ferrite-perlite grain-refined steel characteristic, and this could be explained with the presence of only globular-oxide type inclusions, which reduces fracture nucleation sites, and does not promote fracture easy-propagation. Sulfide type inclusions found in dual-phase steel, associated with globular-oxide ones, give to this material a more brittle behavior. Toughness anisotropy is clearly noted, and in both cases the highest values are found inthe longitudinal direction, related to the preferential inclusion alignment achieved in rolling. The low ductile-to-brittle transition temperature found in both steels, however, could be related to the very fine structures found.
dc.description.firstpage170
dc.description.issuenumber2
dc.description.lastpage173
dc.description.volume25
dc.identifier.citationMAGNABOSCO, R.;Magnabosco, R.;Rodrigo Magnabosco;R. Magnabosco;R. MAGNABOSCO;Magnabosco, Rodrigo; ROSSETTO, L. C.. Toughness of Two HSLA Steel Sheets.. Journal of the Brazilian Society of Mechanical Sciences and Engineering (Impresso), v. XXV, n. 2, p. 170-173, 2003.
dc.identifier.doi10.1590/S1678-58782003000200009
dc.identifier.issn1678-5878
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/2263
dc.relation.ispartofJournal of the Brazilian Society of Mechanical Sciences and Engineering
dc.rightsAcesso Aberto
dc.subject.otherlanguageAnisotropy
dc.subject.otherlanguageDual-phase steels
dc.subject.otherlanguageFerrite-perlite grain-refined steels
dc.subject.otherlanguageHSLA steels
dc.subject.otherlanguageMechanical properties
dc.titleToughness of Two HSLA Steel Sheets
dc.typeArtigo
fei.scopus.citations7
fei.scopus.eid2-s2.0-0242720504
fei.scopus.subjectDual-phase steels
fei.scopus.updated2024-03-04
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0242720504&origin=inward
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