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Characterisation of the solidification of a molten steel surface using infrared thermography
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Slater, Carl, Hechu, Kateryna, Davis, Claire and Sridhar, Seetharaman (2019) Characterisation of the solidification of a molten steel surface using infrared thermography. Metals, 9 (2). 126. doi:10.3390/met9020126 ISSN 2075-4701.
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Official URL: https://doi.org/10.3390/met9020126
Abstract
Infrared thermography provides an option for characterising surface reactions and their effects on the solidification of steel under different gas atmospheres. In this work, infrared thermography has been used during solidification of Twin Induced Plasticity (TWIP) steel in argon, carbon dioxide and nitrogen atmospheres using a confocal scanning laser microscope (CSLM). It was found that surface reactions resulted in a solid oxide film (in carbon dioxide) and decarburisation, along with surface graphite formation (in nitrogen). In both cases the emissivity and, hence, the cooling rate of the steel was affected in distinct ways. Differences in nucleation conditions (free surface in argon compared to surface oxide/graphite in carbon dioxide/nitrogen) as well as chemical composition changes (decarburisation) affected the liquidus and solidus temperatures, which were detected by thermal imaging from the thermal profile measured.
| Item Type: | Journal Article | ||||||
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| Subjects: | T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
| Library of Congress Subject Headings (LCSH): | Steel, Solidification, Oxides, Thermography | ||||||
| Journal or Publication Title: | Metals | ||||||
| Publisher: | MDPI | ||||||
| ISSN: | 2075-4701 | ||||||
| Official Date: | 24 January 2019 | ||||||
| Dates: |
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| Volume: | 9 | ||||||
| Number: | 2 | ||||||
| Article Number: | 126 | ||||||
| DOI: | 10.3390/met9020126 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access (Creative Commons) | ||||||
| Date of first compliant deposit: | 29 May 2019 | ||||||
| Date of first compliant Open Access: | 31 May 2019 | ||||||
| RIOXX Funder/Project Grant: |
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