Growth of bainitic ferrite and carbon partitioning during the early stages of bainite transformation in a 2 mass% silicon steel studied by in situ neutron diffraction, TEM and APT

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dc.contributor.authorTimokhina, IBen_AU
dc.contributor.authorLiss, KDen_AU
dc.contributor.authorRaabe, Den_AU
dc.contributor.authorRakha, Ken_AU
dc.contributor.authorBeladi, Hen_AU
dc.contributor.authorXiong, XYen_AU
dc.contributor.authorHodgson, PDen_AU
dc.date.accessioned2016-02-21T23:59:20Zen_AU
dc.date.available2016-02-21T23:59:20Zen_AU
dc.date.issued2016-01-08en_AU
dc.date.statistics2016-02-22en_AU
dc.description.abstractIn situ neutron diffraction, transmission electron microscopy (TEM) and atom probe tomography (APT) have been used to study the early stages of bainite transformation in a 2 mass% Si nano-bainitic steel. It was observed that carbon redistribution between the bainitic ferrite and retained austenite at the early stages of the bainite transformation at low isothermal holding occurred in the following sequence: (i) formation of bainitic ferrite nuclei within carbon-depleted regions immediately after the beginning of isothermal treatment; (ii) carbon partitioning immediately after the formation of bainitic ferrite nuclei but substantial carbon diffusion only after 33 min of bainite isothermal holding; (iii) formation of the carbon-enriched remaining austenite in the vicinity of bainitic laths at the beginning of the transformation; (iv) segregation of carbon to the dislocations near the austenite/ferrite interface; and (v) homogeneous redistribution of carbon within the remaining austenite with the progress of the transformation and with the formation of bainitic ferrite colonies. Bainitic ferrite nucleated at internal defects or bainite/austenite interfaces as well as at the prior austenite grain boundary. Bainitic ferrite has been observed in the form of an individual layer, a colony of layers and a layer with sideplates at the early stages of transformation. Copyright © International Union of Crystallographyen_AU
dc.identifier.citationTimokhina, I. B., Liss, K. D., Raabe, D., Rakha, K., Beladi, H., Xiong, X. Y., Hodgson, P. D. (2016). Growth of bainitic ferrite and carbon partitioning during the early stages of bainite transformation in a 2 mass% silicon steel studied by in situ neutron diffraction, TEM and APT. Journal of Applied Crystallography, 49(2), 399-414. doi:10.1107/S1600576716000418en_AU
dc.identifier.govdoc6479en_AU
dc.identifier.issn1600-5767en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleJournal of Applied Crystallographyen_AU
dc.identifier.pagination399-414en_AU
dc.identifier.urihttps://doi.org/10.1107/S1600576716000418en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/6597en_AU
dc.identifier.volume49en_AU
dc.language.isoenen_AU
dc.publisherInternational Union of Crystallographyen_AU
dc.subjectNeutron diffractionen_AU
dc.subjectTransmission electron microscopyen_AU
dc.subjectBainiteen_AU
dc.subjectCarbonen_AU
dc.subjectLayersen_AU
dc.subjectAusteniteen_AU
dc.titleGrowth of bainitic ferrite and carbon partitioning during the early stages of bainite transformation in a 2 mass% silicon steel studied by in situ neutron diffraction, TEM and APTen_AU
dc.typeJournal Articleen_AU
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