Nano-SIMS investigation of boron distribution in steels

The introduction of boron in amounts of tens parts per million (ppm) increases the hardenability of steels. Nevertheless, this positive effect of boron can drastically be reduced during the industrial process if boron precipitation occurs. In order to identify the different steps of boron precipitat...

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Bibliographic Details
Published in:Surface and interface analysis 2011-01, Vol.43 (1-2), p.573-575
Main Authors: Valle, N., Drillet, J., Pic, A., Migeon, H.-N.
Format: Article
Language:English
Subjects:
Atomic, molecular, and ion beam impact and interactions with surfaces
Boron
boron precipitation
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron and ion emission by liquids and solids
impact phenomena
Exact sciences and technology
high strength steels
Impact phenomena (including electron spectra and sputtering)
Nanocomposites
Nanomaterials
NanoSIMS 50
Nanostructure
Physics
Precipitates
Precipitation
Secondary ion mass spectrometry
Steels
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Summary:The introduction of boron in amounts of tens parts per million (ppm) increases the hardenability of steels. Nevertheless, this positive effect of boron can drastically be reduced during the industrial process if boron precipitation occurs. In order to identify the different steps of boron precipitation for the main parts of the process (deformation at high temperature, cooling and welding), the distribution of boron in high strength steels is studied through SIMS nano‐analysis. It is shown that the B state and the nature of the B precipitates can be directly deduced from different ion maps (11B, 12C, 11B12C, 11B14N, 11B16O) acquired simultaneously. Depending on the progress of the process, borocarbides and boron nitrides precipitates are observed. Copyright © 2010 John Wiley & Sons, Ltd.
ISSN:0142-2421
1096-9918
1096-9918
DOI:10.1002/sia.3531