Mechanical Behaviour of Nanostructured Iron Fabricated by Severe Plastic Deformation under Diffusion Flow of Nitrogen

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dc.contributor.authorYurkova, Alexandra Ivanovna
dc.contributor.authorByakova, Alexandra Victorovna
dc.contributor.authorBelots’ky, Aleksei Vasilevich
dc.contributor.authorMilman, Yuliy Viktorovich
dc.contributor.authorDub, Sergey Nikolaevich
dc.contributor.editorZenji Horita
dc.date.accessioned2016-06-08T13:51:40Z
dc.date.available2016-06-08T13:51:40Z
dc.date.issued2006-01
dc.date.submitted2005
dc.descriptionThis is a preprint of an article published in Materials Science Forum, Vols. 503-504. The final authenticated version is available online at: http://doi.org/10.4028/www.scientific.net/MSF.503-504.645en
dc.description.abstractenSpecific features of mechanical behaviour of ultra fine grained iron subjected to friction treatment with nitriding (FN) were clarified by comparison with that induced by friction treatment (FT) with air. Mechanical parameters such as Young’s modulus, nanohardness, and plasticity characteristic δA were found to be of high sensitive both to the scale of grain structure and to iron modification by nitrogen. Young’s modulus tends to decrease and Hall-Petch low fails to describe correlation between grain structure and hardness for submicro-grained and nanocrystalline iron. Hall-Petch coefficient, ky, decreases as grain size decreases within submicro-grained and, then, nano grained sections and it takes even negative value in nano grained section modified by nitrogen. Parameter δA is found to be dependent on combination of hardness and Young’s modulus, resulting in its variation with decreasing the grain size. The presence of secondary nanocrystalline Fe4N phase fundamentally changes mechanical behaviour of nanocrystalline iron, leading to strengthening the grain boundaries and triple junctions.uk
dc.format.pagerangePp. 645-650uk
dc.identifier.citationMechanical Behaviour of Nanostructured Iron Fabricated by Severe Plastic Deformation under Diffusion Flow of Nitrogen / A. I. Yurkova, A.V. Byakova, A.V. Belots’ky [et al.] // Materials Science Forum (January, 2006, Switzerland). – 2006. – V. 503-504. – P. 645–650.uk
dc.identifier.doihttp://doi.org/10.4028/www.scientific.net/MSF.503-504.645
dc.identifier.urihttps://ela.kpi.ua/handle/123456789/16279
dc.language.isoenuk
dc.publisherTrans Tech Publicationsuk
dc.publisher.placeSwitzerlanduk
dc.source.nameMaterials Science Forum, V. 503-504uk
dc.status.pubpublisheduk
dc.subjectDeformation Structureuk
dc.subjectFrictionuk
dc.subjectHardnessuk
dc.subjectNano Grain Structureuk
dc.subjectNanoindentationuk
dc.subjectNitridinguk
dc.subjectPlasticity Characteristic δ-Auk
dc.subjectSevere Plastic Deformationuk
dc.subjectYoung's Modulusuk
dc.titleMechanical Behaviour of Nanostructured Iron Fabricated by Severe Plastic Deformation under Diffusion Flow of Nitrogenuk
dc.typeArticleuk

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