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Anomalies in carbon concentration determinations from nanostructured bainite


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Authors

Bhadeshia, HKDH 

Abstract

jats:p There are large discrepancies in the measured concentrations of carbon in the ferrite and austenite within nanostructured bainite and carbide-free bainitic steels in general. The concentrations are usually measured on the basis of lattice parameters determined using X-ray diffraction, lattice imaging in transmission microscopy, or using the atom probe technique, i.e. time-of-flight mass spectroscopy. We examine here a number of difficulties with these methods and assess the role of defects, crystal symmetry and the heterogeneous distribution of carbon in interpreting the experimental data. Issues where experimental and theoretical work is needed are identified. </jats:p>

Description

Keywords

Lattice parameters, Carbon, Dislocations, Density, Bainite, Retained austenite

Journal Title

Materials Science and Technology (United Kingdom)

Conference Name

Journal ISSN

0267-0836
1743-2847

Volume Title

31

Publisher

SAGE Publications