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In situ observation of calcium oxide treatment of inclusions in molten steel by confocal microscopy
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Khurana, Bharat, Spooner, Stephen, Rao, M. B. V., Roy, Gour Gopal and Srirangam, Prakash (2017) In situ observation of calcium oxide treatment of inclusions in molten steel by confocal microscopy. Metallurgical and Materials Transactions B . doi:10.1007/s11663-017-0956-2
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Official URL: http://dx.doi.org/10.1007/s11663-017-0956-2
Abstract
Calcium treatment of aluminum killed steel was observed in situ using high-temperature confocal scanning laser microscope (HT-CSLM). This technique along with a novel experimental design enables continuous observation of clustering behavior of inclusions before and after the calcium treatment. Results show that the increase in average inclusion size in non-calcium-treated condition was much faster compared to calcium-treated condition. Results also show that the magnitude of attractive capillary force between inclusion particles in non-treated condition was about 10−15 N for larger particles (10 µm) and 10−16 N for smaller particles (5 µm) and acting length of force was about 30 µm. In the case of calcium-treated condition, the magnitude and acting length of force was reduced to 10−16 N and 10 µm, respectively, for particles of all sizes. This change in attractive capillary attractive force is due to change in inclusion morphology from solid alumina disks to liquid lens particles during calcium treatment.
| Item Type: | Journal Article | ||||||
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| Subjects: | Q Science > QH Natural history T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
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| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||
| Library of Congress Subject Headings (LCSH): | Confocal microscopy , Steel--Inclusions, Steelwork | ||||||
| Journal or Publication Title: | Metallurgical and Materials Transactions B | ||||||
| Publisher: | Springer New York LLC | ||||||
| ISSN: | 1073-5615 | ||||||
| Official Date: | 9 March 2017 | ||||||
| Dates: |
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| Date of first compliant deposit: | 14 March 2017 | ||||||
| DOI: | 10.1007/s11663-017-0956-2 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access |
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