The role of carbon segregation on nanocrystallisation of pearlitic steels processed by severe plastic deformation

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dc.creatorSauvage, Xavier
dc.creatorIvanisenko, Yulia
dc.date2008-04-28
dc.date.accessioned2026-07-07T12:18:30Z
dc.date.available2026-07-07T12:18:30Z
dc.descriptionThe nanostructure and the carbon distribution in a pearlitic steel processed by torsion under high pressure was investigated by three-dimensional atom probe. In the early stage of deformation (shear strain of 62), off-stoichiometry cementite was analysed close to interphase boundaries and a strong segregation of carbon atoms along dislocation cell boundaries was observed in the ferrite. At a shear strain of 300, only few nanoscaled off-stoichiometry cementite particles remain and a nanoscaled equiaxed grain structure with a grain size of about 20 nm was revealed. 3D-AP data clearly point out a strong segregation of carbon atoms along grain boundaries. The influence of this carbon atom segregation on the nanostructure formation is discussed and a scenario accounting for the nanocrystallisation during severe plastic deformation is proposed.
dc.identifierhttps://arxiv.org/abs/0804.4377
dc.identifierhttp://arxiv.org/abs/0804.4377
dc.identifierJournal of Materials Science 42 (2006) 1615
dc.identifierdoi:10.1007/s10853-006-0750-z
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/212432
dc.subjectMaterials Science
dc.titleThe role of carbon segregation on nanocrystallisation of pearlitic steels processed by severe plastic deformation
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