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Journal of Materials Science
Published in: Journal of Materials Science 11/2008

01-06-2008 | Intergranular and Interphase Boundaries in Materials

The approach to equilibrium during tempering of a bulk nanocrystalline steel: an atom probe investigation

Authors: F. G. Caballero, M. K. Miller, C. Garcia-Mateo

Published in: Journal of Materials Science | Issue 11/2008

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Abstract

A local electrode atom probe has been used to analyze the solute partitioning during bainite transformation in a novel, nanocrystalline bainitic steel. Atom probe results show the absence of any partitioning of substitutional elements between the phases involved. The results are fully consistent with the diffusionless transformation of austenite to bainite. However, substitutional elements are expected to redistribute approaching an equilibrium phase boundary as the mixture of bainitic ferrite and retained austenite is tempered. The compositional analysis of the austenite/ferrite interface by atom probe tomography indicates that retained austenite decomposes during tempering before equilibrium is reached at the interface.
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Metadata
Title
The approach to equilibrium during tempering of a bulk nanocrystalline steel: an atom probe investigation
Authors
F. G. Caballero
M. K. Miller
C. Garcia-Mateo
Publication date
01-06-2008
Publisher
Springer US
Published in
Journal of Materials Science / Issue 11/2008
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-007-2157-x

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