Investigation of constitutive relationship and dynamic recrystallization behavior of 22MnB5 during hot deformation

dc.bibliographicCitation.firstPage102426eng
dc.bibliographicCitation.lastPage6740eng
dc.bibliographicCitation.volume14eng
dc.contributor.authorXu, Y.
dc.contributor.authorBirnbaum, P.
dc.contributor.authorPilz, S.
dc.contributor.authorZhuang, X.
dc.contributor.authorZhao, Z.
dc.contributor.authorKräusel, V.
dc.date.accessioned2020-07-18T06:12:41Z
dc.date.available2020-07-18T06:12:41Z
dc.date.issued2019
dc.description.abstractIn order to analyze the softening behavior of 22MnB5 steel and further predict the constitutive relationship during hot sheet metal forming, a series of isothermal hot compression tests were conducted at the temperature range of 800–950 °C and strain rate range of 0.01–0.8 s−1 on BAEHR 805 A/D thermo-mechanical simulator system. Based on the friction corrected flow curves, the characteristic strain and stress of dynamic recrystallization (DRX) were derived from the Kocks-Mecking plots and expressed as a function of Zener-Hollomon parameter. Moreover, a physical constitutive model considering work hardening (WH), dynamic recovery (DRV) and DRX as well as corresponding JMAK-type DRX kinetics were developed. The results showed that the established physical equations can accurately predict the flow behavior with a correlation coefficient of 0.997 and average absolute relative error of 3.89%. Optical observation of the microstructure after hot compression revealed that the established DRX kinetics accurately reflects the reality, and then a Zener-Hollomon parameter dependent dynamic recrystallized grain size model was developed. Furthermore, EBSD analysis was carried out to study the effect of deformation conditions on martensite morphology and the results show that a lower temperature and higher strain rate lead to a finer martensite packet while the martensite block width becomes larger under the higher strain rate.eng
dc.description.sponsorshipLeibniz_Fondseng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://doi.org/10.34657/3638
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/5009
dc.language.isoengeng
dc.publisherAmsterdam : Elsevier B.V.eng
dc.relation.doihttps://doi.org/10.1016/j.rinp.2019.102426
dc.relation.ispartofseriesResults in Physics 14 (2019)eng
dc.relation.issn2211-3797
dc.rights.licenseCC BY-NC-ND 4.0 Unportedeng
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/eng
dc.subjectConstitutive modeleng
dc.subjectDynamic recrystallizationeng
dc.subjectMartensite morphologyeng
dc.subject.ddc530eng
dc.titleInvestigation of constitutive relationship and dynamic recrystallization behavior of 22MnB5 during hot deformationeng
dc.typearticleeng
dc.typeTexteng
dcterms.bibliographicCitation.journalTitleResults in Physicseng
tib.accessRightsopenAccesseng
wgl.contributorIFWDeng
wgl.subjectPhysikeng
wgl.typeZeitschriftenartikeleng
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