title: Resolving the morphology of niobium carbonitride nano-precipitates in steel using atom probe tomography.
abstract: Atom probe is a powerful technique for studying the composition of nano-precipitates, but their morphology within the reconstructed data is distorted due to the so-called local magnification effect. A new technique has been developed to mitigate this limitation by characterizing the distribution of the surrounding matrix atoms, rather than those contained within the nano-precipitates themselves. A comprehensive chemical analysis enables further information on size and chemistry to be obtained. The method enables new insight into the morphology and chemistry of niobium carbonitride nano-precipitates within ferrite for a series of Nb-microalloyed ultra-thin cast strip steels. The results are supported by complementary high-resolution transmission electron microscopy.
authors.affiliation: 1School of Aerospace,Mechanical and Mechatronic Engineering,The University of Sydney,NSW 2006,Australia.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Breen
authors.affiliation: 3School of Mechanical Engineering,Johns Hopkins University,Baltimore,MD 21218-2682,USA.
authors.forename: Kelvin Y
authors.initials: KY
authors.lastname: Xie
authors.affiliation: 4Department of Materials,University of Oxford,Parks Road,OX13PH,Oxford,UK.
authors.forename: Michael P
authors.initials: MP
authors.lastname: Moody
authors.affiliation: 4Department of Materials,University of Oxford,Parks Road,OX13PH,Oxford,UK.
authors.forename: Baptiste
authors.initials: B
authors.lastname: Gault
authors.affiliation: 1School of Aerospace,Mechanical and Mechatronic Engineering,The University of Sydney,NSW 2006,Australia.
authors.forename: Hung-Wei
authors.initials: HW
authors.lastname: Yen
authors.affiliation: 5Department of Psychology,The University of Sydney,NSW 2006,Australia.
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Wong
authors.affiliation: 1School of Aerospace,Mechanical and Mechatronic Engineering,The University of Sydney,NSW 2006,Australia.
authors.forename: Julie M
authors.initials: JM
authors.lastname: Cairney
authors.affiliation: 1School of Aerospace,Mechanical and Mechatronic Engineering,The University of Sydney,NSW 2006,Australia.
authors.forename: Simon P
authors.initials: SP
authors.lastname: Ringer