Ultrafine Grain Refinement of Iron Induced by Severe Plastic Deformation in assistance of multi-directional deformation mode

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dc.contributor.authorYurkova, Alexandra Ivanovna
dc.contributor.authorByakova, Alexandra Victorovna
dc.contributor.authorGricenko, Marina
dc.contributor.departmentВисокотемпературних матеріалів та порошкової мкталургіїuk
dc.contributor.facultyІнженерно-фізичний факультетuk
dc.contributor.institutionНТУУ «КПІ»uk
dc.date.accessioned2016-06-10T08:13:54Z
dc.date.available2016-06-10T08:13:54Z
dc.date.issued2011-09-27
dc.date.submitted2011-05
dc.description.abstractenThis study is primary addressed to the problem of grain refinement of ferrite subjected to severe plastic deformation (SPD). In particular, ultra fine refining the original coarse grain of was shown to be realistic using severe plastic deformation with friction (SPDF). Several structural sections of different scale regimes consisted of the grains from several nanometres at the top surface to several micrometres in the region adjacent to the strain-free matrix are formed in assistance of multi-directional deformation mode indicative of SPDF process. Structural revolution induced by SPD and governed by simultaneous high level of strain rate and temperature control was adequately described using Zener-Hollomon parameter, Z. Ultra grain refinement of ferrite down to submicrometer–nanometer scale regimes was found to be available when parameter Z exceeds the critical value roughly about . High efficiency of processes assisted by multi-directional deformation for ultra fine grain refining caused through continuous dynamic recrystallisation has been justified compared to those ensured by unidirectional deformation mode and supported by conventional dynamic recrystallisation. At the multi-directional deformation the variation of grain size d with Z parameter has a tendency to follow the equation d=6•10 7•Z0-0.47 while unidirectional deformation by shear or compression gives the equation d=3•10 2•Z0-0.16.uk
dc.event.date2011-09-27
dc.event.placeAlushta (Crimea, Ukraine)uk
dc.format.pagerangeP. 260-269uk
dc.identifier.citationYurkova, A. I. Ultrafine Grain Refinement of Iron Induced by Severe Plastic Deformation in assistance of multi-directional deformation mode / A. I. Yurkova, A. V. Byakova, M. G. Gricenko // Proceedings of the International Conference «Nanomaterials: Applications and Properties». – 2011. – Vol. 2, Part II. – P. 260-269.uk
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/16364
dc.language.isoenuk
dc.publisherSumy State Universityuk
dc.publisher.placeSumyuk
dc.source.nameProceedings of the International Conference «Nanomaterials: Applications and Properties». – 2011. – Vol. 2, Part II.uk
dc.status.pubpublisheduk
dc.subjectironuk
dc.subjectsevere plastic deformationuk
dc.subjectgrain refinementuk
dc.subjectdynamic recrystallisationuk
dc.subjecthot-to-warm workinguk
dc.subjectZener-Hollomon parameteruk
dc.subject.udc539.401:669-175.2uk
dc.titleUltrafine Grain Refinement of Iron Induced by Severe Plastic Deformation in assistance of multi-directional deformation modeuk
dc.title.event1-st International Conference «Nanomaterials: Applications and Properties»uk
dc.typeArticleuk
thesis.degree.level-uk

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