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VERSION:2.0
METHOD:PUBLISH
BEGIN:VEVENT
ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 19b
SUMMARY:Determination of insoluble oxygen in high aluminium steels using various techniques
DESCRIPTION:Insoluble oxygen constitutes a substantial portion of total oxygen in the Al-deoxidized steels. The concentration of dissolved oxygen increases as the Al concentration increases beyond a certain critical value. In some steel grades, Al requirement is much higher than that is required for deoxidation. In the present work, the insoluble oxygen in such high aluminum steels has been estimated and compared using two different techniques: (i) two stage heating method in inert gas fusion infrared absorptiometry to differentiate soluble oxygen and insoluble oxygen. In the stage I, the sample was first heated to a temperature of 1873 K to remove all the dissolved oxygen. SEM studies showed that alumina inclusions were still present and were not removed by carbothermic reduction after stage I.  In stage II, the sample was heated to 2613 K at which  the alumina inclusions (insoluble oxygen) were reduced by the graphite. (ii) A Scanning Electron Microscopy Automated Inclusion Analysis (SEM-AIA) was used to estimate the size and number of inclusions in the steel samples. The insoluble oxygen was estimated, by Area Fraction (AF) method from the SEM-AIA data. 
CLASS:PUBLIC
DTSTART:20230615T121000
DTEND:20230615T123000
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