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High-resolution topochemical analysis and thermochemical simulations of oxides and nitrides at grain boundaries and within the grains of a low alloy Mn-Cr hot-rolled steel sheet

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Praig, Vera G., Stoger-Pollach, Michael, Schintlmeister, Arno, Auinger, Michael and Danninger, Herbert (2021) High-resolution topochemical analysis and thermochemical simulations of oxides and nitrides at grain boundaries and within the grains of a low alloy Mn-Cr hot-rolled steel sheet. Journal of Alloys and Compounds, 876 . 160069. doi:10.1016/j.jallcom.2021.160069

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Official URL: https://doi.org/10.1016/j.jallcom.2021.160069

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Abstract

The selective oxidation underneath the scale layer of an industrially hot rolled Fe-1.8Mn-0.8Cr steel at temperatures between 600-700∘C has been investigated. The spatial distribution and composition of formed precipitates has been studied by high-resolution topochemical analysis via TEM-EELS and NanoSIMS and revealed heterogeneities in chemical composition, especially along grain boundaries. It could be shown that grain boundary oxides are predominantly composed of aluminium, chromium or silicon oxides/nitrides, surrounded by manganese-rich oxides. Experimental results of phase stability have been compared to numerical simulations, considering the distribution of more than 40 potentially stable oxide-, nitride- and carbide phases and differences are critically discussed.

Item Type: Journal Article
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TS Manufactures
Divisions: Faculty of Science > WMG (Formerly the Warwick Manufacturing Group)
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Sheet-metal, Steel, Steel -- Oxygen content , Steel -- Nitrogen content , Steel -- Thermal properties
Journal or Publication Title: Journal of Alloys and Compounds
Publisher: Elsevier
ISSN: 09258388
Official Date: 25 September 2021
Dates:
DateEvent
25 September 2021Published
30 April 2021Available
17 April 2021Accepted
Volume: 876
Article Number: 160069
DOI: 10.1016/j.jallcom.2021.160069
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Related URLs:
  • http://creativecommons.org/licenses/by/4...

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