The Influence of Vacuum Treatment on Inclusion Composition: Theoretical Study
2010 (English)In: High Temperature Materials and Processes, ISSN 0334-6455, Vol. 29, no 3, 179-187 p.Article in journal (Refereed) Published
A theoretical study has been conducted into how inclusion composition is influenced by vacuum treatment. Software for computational thermodynamics has been used to simulate how the conditions in a steel melt changed as a result of a decreased pressure. A case study was made on a low sulphur bearing steel (1.4% Cr, 1.0%C). The calculations show the effect of sulphur, oxygen, carbon and temperature on precipitated phases in the steel melt. The result shows that at low pressure, formation of carbon monoxide takes place. For 5 ppm O and 10 ppm S the CO-gas becomes thermodynamically stable below 40 torr. Oxide phases will be reduced and CaS will be the stable phase.
Place, publisher, year, edition, pages
2010. Vol. 29, no 3, 179-187 p.
vacuum, inclusions, calcium aluminates
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-8123ISI: 000283965900007ScopusID: 2-s2.0-78149246585OAI: oai:DiVA.org:kth-8123DiVA: diva2:13360
QC 20100709. Uppdaterad från submitted till published (20101210). Tidigare submitted till Steel Research International, med titeln "The Influence of Vacuum Treatment on Inclusion Composition: Part 1: Theoretical Study".2008-03-192008-03-192010-12-10Bibliographically approved