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Internal oxidation and formation of Si/Al-enriched oxide bands in the scale of electrical steel grades
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Hofler, Thomas, Linder, Bernhard, Angeli, Gerhard, Gierl-Mayer, Christian, Danninger, Herbert and Auinger, Michael (2021) Internal oxidation and formation of Si/Al-enriched oxide bands in the scale of electrical steel grades. Corrosion Science, 187 . 109502. doi:10.1016/j.corsci.2021.109502
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Official URL: http://dx.doi.org/10.1016/j.corsci.2021.109502
Abstract
Oxidation during steel hot rolling is responsible for various surface defects. Local enrichments of oxygen-affine alloying elements such as silicon or aluminium can cause such defects by complicating oxide scale removal. In this paper, correlations between the temperature profile during oxidation and enrichment formation in electrical steels are investigated. Diffusion and reaction simulations using the numerical Crank-Nicolson-scheme are evaluated by comparing them to laboratory-scale oxidized samples. Furthermore, analytical approximations (spectral methods) are investigated as an alternative approach, focusing on trade-offs between accuracy and calculation times. A link between heating periods during oxidation and Si/Al-rich bands in the scale was established.
| Item Type: | Journal Article | ||||||||
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| Subjects: | T Technology > TN Mining engineering. Metallurgy | ||||||||
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| Library of Congress Subject Headings (LCSH): | Steel alloys, Oxidation, Corrosion and anti-corrosives, Materials at high temperatures | ||||||||
| Journal or Publication Title: | Corrosion Science | ||||||||
| Publisher: | Elsevier | ||||||||
| ISSN: | 0010-938X | ||||||||
| Official Date: | 15 July 2021 | ||||||||
| Dates: |
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| Volume: | 187 | ||||||||
| Article Number: | 109502 | ||||||||
| DOI: | 10.1016/j.corsci.2021.109502 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Open Access | ||||||||
| RIOXX Funder/Project Grant: |
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